http://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&action=history&feed=atomSpamAssassin/Preface - Revision history2013-05-19T16:42:46ZRevision history for this page on the wikiMediaWiki 1.11.0http://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25672&oldid=prevMikeh at 15:37, 8 October 20092009-10-08T15:37:44Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of spam an unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of spam an unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
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<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <del style="color: red; font-weight: bold; text-decoration: none;">postmasterâÃÂÃÂbecause </del>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <ins style="color: red; font-weight: bold; text-decoration: none;">postmaster because </ins>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td></tr>
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<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <del style="color: red; font-weight: bold; text-decoration: none;">spamâÃÂÃÂincluding </del>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <del style="color: red; font-weight: bold; text-decoration: none;">reliefâÃÂÃÂfew </del>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <del style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâÃÂâ</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <ins style="color: red; font-weight: bold; text-decoration: none;">spam including </ins>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <ins style="color: red; font-weight: bold; text-decoration: none;">relief few </ins>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <ins style="color: red; font-weight: bold; text-decoration: none;">SpamAssassin</ins>.</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td></tr>
</table>Mikehhttp://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25671&oldid=prevMikeh at 15:37, 8 October 20092009-10-08T15:37:06Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <del style="color: red; font-weight: bold; text-decoration: none;">spamâÃÂÃÂan </del>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <ins style="color: red; font-weight: bold; text-decoration: none;">spam an </ins>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's postmasterâÃÂÃÂbecause something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's postmasterâÃÂÃÂbecause something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td></tr>
</table>Mikehhttp://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25667&oldid=prevAlousItboc at 14:16, 8 October 20092009-10-08T14:16:39Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <del style="color: red; font-weight: bold; text-decoration: none;">spamâÂÂan </del>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <ins style="color: red; font-weight: bold; text-decoration: none;">spamâÃÂÃÂan </ins>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <del style="color: red; font-weight: bold; text-decoration: none;">postmasterâÂÂbecause </del>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <ins style="color: red; font-weight: bold; text-decoration: none;">postmasterâÃÂÃÂbecause </ins>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td></tr>
<tr><td colspan="2" class="diff-lineno">Line 12:</td>
<td colspan="2" class="diff-lineno">Line 13:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <del style="color: red; font-weight: bold; text-decoration: none;">spamâÂÂincluding </del>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <del style="color: red; font-weight: bold; text-decoration: none;">reliefâÂÂfew </del>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <del style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâ¢</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <ins style="color: red; font-weight: bold; text-decoration: none;">spamâÃÂÃÂincluding </ins>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <ins style="color: red; font-weight: bold; text-decoration: none;">reliefâÃÂÃÂfew </ins>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <ins style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâÃÂâ</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td></tr>
</table>AlousItbochttp://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25650&oldid=prevAlousItboc at 02:07, 24 September 20092009-09-24T02:07:43Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <del style="color: red; font-weight: bold; text-decoration: none;">spamâan </del>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <ins style="color: red; font-weight: bold; text-decoration: none;">spamâÂÂan </ins>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <del style="color: red; font-weight: bold; text-decoration: none;">postmasterâbecause </del>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <ins style="color: red; font-weight: bold; text-decoration: none;">postmasterâÂÂbecause </ins>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td></tr>
<tr><td colspan="2" class="diff-lineno">Line 11:</td>
<td colspan="2" class="diff-lineno">Line 12:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <del style="color: red; font-weight: bold; text-decoration: none;">spamâincluding </del>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <del style="color: red; font-weight: bold; text-decoration: none;">reliefâfew </del>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <del style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâ¢</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <ins style="color: red; font-weight: bold; text-decoration: none;">spamâÂÂincluding </ins>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <ins style="color: red; font-weight: bold; text-decoration: none;">reliefâÂÂfew </ins>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <ins style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâ¢</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td></tr>
</table>AlousItbochttp://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25640&oldid=prevAlousItboc at 03:29, 20 September 20092009-09-20T03:29:26Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <del style="color: red; font-weight: bold; text-decoration: none;">spam—an </del>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <ins style="color: red; font-weight: bold; text-decoration: none;">spamâan </ins>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <del style="color: red; font-weight: bold; text-decoration: none;">postmaster—because </del>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <ins style="color: red; font-weight: bold; text-decoration: none;">postmasterâbecause </ins>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td></tr>
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<td colspan="2" class="diff-lineno">Line 11:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <del style="color: red; font-weight: bold; text-decoration: none;">spam—including </del>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <del style="color: red; font-weight: bold; text-decoration: none;">relief—few </del>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <del style="color: red; font-weight: bold; text-decoration: none;">SpamAssassin™</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <ins style="color: red; font-weight: bold; text-decoration: none;">spamâincluding </ins>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <ins style="color: red; font-weight: bold; text-decoration: none;">reliefâfew </ins>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <ins style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâ¢</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td></tr>
</table>AlousItbochttp://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25630&oldid=prevUncopy: spam rev.2009-09-18T14:36:26Z<p>spam rev.</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <del style="color: red; font-weight: bold; text-decoration: none;">spamÃÂâÃÂÃÂÃÂÃÂan </del>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <ins style="color: red; font-weight: bold; text-decoration: none;">spam—an </ins>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <del style="color: red; font-weight: bold; text-decoration: none;">postmasterÃÂâÃÂÃÂÃÂÃÂbecause </del>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <ins style="color: red; font-weight: bold; text-decoration: none;">postmaster—because </ins>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td></tr>
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<td colspan="2" class="diff-lineno">Line 10:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <del style="color: red; font-weight: bold; text-decoration: none;">spamÃÂâÃÂÃÂÃÂÃÂincluding </del>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <del style="color: red; font-weight: bold; text-decoration: none;">reliefÃÂâÃÂÃÂÃÂÃÂfew </del>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <del style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinÃÂâÃÂÃÂÃÂâ</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <ins style="color: red; font-weight: bold; text-decoration: none;">spam—including </ins>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <ins style="color: red; font-weight: bold; text-decoration: none;">relief—few </ins>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <ins style="color: red; font-weight: bold; text-decoration: none;">SpamAssassin™</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td></tr>
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</table>Uncopyhttp://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25617&oldid=prevAlousItboc at 23:30, 15 September 20092009-09-15T23:30:55Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <del style="color: red; font-weight: bold; text-decoration: none;">spamâÃÂÃÂan </del>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <ins style="color: red; font-weight: bold; text-decoration: none;">spamÃÂâÃÂÃÂÃÂÃÂan </ins>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <del style="color: red; font-weight: bold; text-decoration: none;">postmasterâÃÂÃÂbecause </del>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <ins style="color: red; font-weight: bold; text-decoration: none;">postmasterÃÂâÃÂÃÂÃÂÃÂbecause </ins>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td></tr>
<tr><td colspan="2" class="diff-lineno">Line 12:</td>
<td colspan="2" class="diff-lineno">Line 13:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <del style="color: red; font-weight: bold; text-decoration: none;">spamâÃÂÃÂincluding </del>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <del style="color: red; font-weight: bold; text-decoration: none;">reliefâÃÂÃÂfew </del>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <del style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâÃÂâ</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <ins style="color: red; font-weight: bold; text-decoration: none;">spamÃÂâÃÂÃÂÃÂÃÂincluding </ins>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <ins style="color: red; font-weight: bold; text-decoration: none;">reliefÃÂâÃÂÃÂÃÂÃÂfew </ins>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <ins style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinÃÂâÃÂÃÂÃÂâ</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td></tr>
</table>AlousItbochttp://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25592&oldid=prevAlousItboc at 16:48, 4 September 20092009-09-04T16:48:47Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <del style="color: red; font-weight: bold; text-decoration: none;">spamâÂÂan </del>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <ins style="color: red; font-weight: bold; text-decoration: none;">spamâÃÂÃÂan </ins>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <del style="color: red; font-weight: bold; text-decoration: none;">postmasterâÂÂbecause </del>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <ins style="color: red; font-weight: bold; text-decoration: none;">postmasterâÃÂÃÂbecause </ins>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td></tr>
<tr><td colspan="2" class="diff-lineno">Line 11:</td>
<td colspan="2" class="diff-lineno">Line 12:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <del style="color: red; font-weight: bold; text-decoration: none;">spamâÂÂincluding </del>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <del style="color: red; font-weight: bold; text-decoration: none;">reliefâÂÂfew </del>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <del style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâ¢</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <ins style="color: red; font-weight: bold; text-decoration: none;">spamâÃÂÃÂincluding </ins>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <ins style="color: red; font-weight: bold; text-decoration: none;">reliefâÃÂÃÂfew </ins>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <ins style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâÃÂâ</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td></tr>
</table>AlousItbochttp://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25554&oldid=prevAlousItboc at 16:00, 29 August 20092009-08-29T16:00:08Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <del style="color: red; font-weight: bold; text-decoration: none;">spamâan </del>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of <ins style="color: red; font-weight: bold; text-decoration: none;">spamâÂÂan </ins>unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <del style="color: red; font-weight: bold; text-decoration: none;">postmasterâbecause </del>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>System administrators pay for spam with their time. The Internet's email system was designed to make it difficult to lose email messages: when a computer can't deliver a message to the intended recipient, it does its best to return that message to the sender. If it can't send the message to the sender, it sends it to the computer's <ins style="color: red; font-weight: bold; text-decoration: none;">postmasterâÂÂbecause </ins>something must be seriously wrong if both the email addresses of the sender and the recipient of a message are invalid.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The well-meaning nature of Internet mail software becomes a positive liability when spammers come into the picture. In a typical bulk mailing, anywhere from a few hundred to tens of thousands of email addresses might be invalid. Under normal circumstances these email messages would bounce back to the sender. But the spammer doesn't want them! To avoid being overwhelmed, spammers often use invalid return addresses. The result: the email messages end up in the mailboxes of the Internet postmasters, who are usually living, breathing system administrators.</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>As the spam problem grows worse and worse, system administrators are increasingly taking themselves off their computers' "postmaster" mailing lists. The result is predictable: they're deluged with less email, but problems that they would normally discover by receiving postmaster email are being missed as well. The Internet as a whole suffers as a result.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <del style="color: red; font-weight: bold; text-decoration: none;">spamâincluding </del>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <del style="color: red; font-weight: bold; text-decoration: none;">reliefâfew </del>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <del style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâ¢</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Although there are many important ways to reduce <ins style="color: red; font-weight: bold; text-decoration: none;">spamâÂÂincluding </ins>obscuring email addresses, complaining to spammers' service providers, and seeking legal and legislative <ins style="color: red; font-weight: bold; text-decoration: none;">reliefâÂÂfew </ins>remedies are as immediately effective as filtering email messages on the basis of content and format, and few filtering systems are as widely used and well maintained as <ins style="color: red; font-weight: bold; text-decoration: none;">SpamAssassinâ¢</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>This book is for mail system administrators, network administrators, and Internet service providers who are concerned about the growing toll that spam is taking on their systems and their users and are looking for a way to regain some control or reduce the burden on their users.</div></td></tr>
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</table>AlousItbochttp://commons.oreilly.com/wiki/index.php?title=SpamAssassin/Preface&diff=25322&oldid=prevMikeh at 13:27, 17 August 20092009-08-17T13:27:16Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{SpamAssassin/TOC}}</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of spamâan unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you use email, it's likely that you've recently been visited by a piece of spamâan unsolicited, unwanted message, sent to you without your permission.<ref>Spam is also a registered trademark of Hormel Foods, which uses the word to describe a canned luncheon meat. In this book, the word "spam" is used exclusively to refer to Internet spam and not the meat.</ref> If you manage an email system, it's almost certain that you've had to help your users avoid the deluge of unwanted email.</div></td></tr>
</table>Mikeh