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	<title>Comments on: Tackling “Undelivered Mail return to sender” and Image Spam with Greylisting</title>
	<link>http://www.timhardy.net/wordpress/2006/12/10/tackling-undelivered-mail-return-to-sender-and-image-spam-with-greylisting/</link>
	<description>Too Much to Learn, Too Little Time</description>
	<pubDate>Wed, 07 Jan 2009 05:03:09 +0000</pubDate>
	<generator>http://wordpress.org/?v=2.0.12-alpha</generator>

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		<title>by: Tim Hardy</title>
		<link>http://www.timhardy.net/wordpress/2006/12/10/tackling-undelivered-mail-return-to-sender-and-image-spam-with-greylisting/#comment-38316</link>
		<pubDate>Wed, 23 Apr 2008 23:40:14 +0000</pubDate>
		<guid>http://www.timhardy.net/wordpress/2006/12/10/tackling-undelivered-mail-return-to-sender-and-image-spam-with-greylisting/#comment-38316</guid>
					<description>Hi Craig - sorry for the delay in responding. Your comment slipped through the cracks. You can't greylist backscatter unfortunately which is why you need to write a manual filter based on the typical message contents of an Undelivered and either send them to your spam folder (not quite the same as marking as spam but it has the same end result) or delete them automatically. Hope this helps.</description>
		<content:encoded><![CDATA[<p>Hi Craig - sorry for the delay in responding. Your comment slipped through the cracks. You can&#8217;t greylist backscatter unfortunately which is why you need to write a manual filter based on the typical message contents of an Undelivered and either send them to your spam folder (not quite the same as marking as spam but it has the same end result) or delete them automatically. Hope this helps.
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		<title>by: Craig Meehan</title>
		<link>http://www.timhardy.net/wordpress/2006/12/10/tackling-undelivered-mail-return-to-sender-and-image-spam-with-greylisting/#comment-33528</link>
		<pubDate>Fri, 14 Mar 2008 03:50:53 +0000</pubDate>
		<guid>http://www.timhardy.net/wordpress/2006/12/10/tackling-undelivered-mail-return-to-sender-and-image-spam-with-greylisting/#comment-33528</guid>
					<description>Tim, How does this greylisting work when the email that comes back to you is thought to have originated from you and hence can't be stopped by normal junk mail listings. I get the Undelivered emails and when I try to mark it as junk mail, it states it has come from my server and hence won't allow me to mark it as junk mail. Thanks, Craig.</description>
		<content:encoded><![CDATA[<p>Tim, How does this greylisting work when the email that comes back to you is thought to have originated from you and hence can&#8217;t be stopped by normal junk mail listings. I get the Undelivered emails and when I try to mark it as junk mail, it states it has come from my server and hence won&#8217;t allow me to mark it as junk mail. Thanks, Craig.
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