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<TITLE>RE: Whitelisting problem</TITLE>
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<P><FONT SIZE=2>SpamAssassin gets these from the headers and they're easily forged.</FONT>
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<P><FONT SIZE=2>My feature would be whitelist only if received from a server which reverse looks up as being that domain.</FONT>
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<P><FONT SIZE=2>Two different mechanisms.</FONT>
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<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Matt Kettler [<A HREF="mailto:mkettler@EVI-INC.COM">mailto:mkettler@EVI-INC.COM</A>]</FONT>
<BR><FONT SIZE=2>Sent: Tuesday, January 07, 2003 1:28 PM</FONT>
<BR><FONT SIZE=2>To: MAILSCANNER@jiscmail.ac.uk</FONT>
<BR><FONT SIZE=2>Subject: Re: Whitelisting problem</FONT>
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<P><FONT SIZE=2>hmm why not:</FONT>
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<P><FONT SIZE=2>whitelist_from_rcvd *@ibm.com ibm.com</FONT>
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<P><FONT SIZE=2>The second part of the command does not have to be a complete server name.</FONT>
<BR><FONT SIZE=2>Just a substring of it. So if any of the mailservers are reported as</FONT>
<BR><FONT SIZE=2>(something).ibm.com in the received headers, this will have the same effect</FONT>
<BR><FONT SIZE=2>as your "lookup" feature.</FONT>
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<P><FONT SIZE=2>At 12:39 PM 1/7/2003 -0500, you wrote:</FONT>
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<P><FONT SIZE=2>>Don't think I'd be able to find what servers they send out all their mail</FONT>
<BR><FONT SIZE=2>>from.</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Possible feature:</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Whitelisting based on reverse name lookups.</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>If the email was sent from a server that reverse looks up as domain then</FONT>
<BR><FONT SIZE=2>>whitelist.</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>From: *@ibm.com lookup</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>lookup as an additional parameter to yes no.</FONT>
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