On Tue, Sep 18, 2012 at 9:23 AM, Chris Knadle <[email protected]>wrote: <snip>
> Here are some statistics for my server for Sept 15 - 16 (these statistics > are > sent daily, via a Perl script that comes with the version of Exim4 in > Debian): > > mail rejection reasons by message count > --------------------------------------- > Messages Mail rejection reason > 516 Rejected HELO/EHLO: syntactically invalid argument > 378 Listed at <DNSBL location 1> > 97 Msg rejected due to spam score > 22 Rejected EHLO: non-FQDN HELO greeting > 12 Rejected EHLO: raw IP address used in HELO/EHLO greeting > 10 Rejected RCPT: Unrouteable address > 7 Rejected EHLO: forged localhost > 4 No email address in To: field > 3 Listed at <DNSBL location 2> > 3 Rejected RCPT: Sender verify failed > So, I think here is part of the difference. My average reject count was about 20,000 messages a day (strict filtering, greylisted, etc). Once the fire hose gets big enough, the statistics do not go in your favor. :) The other problem was some legitimate businesses are misconfigured so I was rejecting legit invoice and shipping confirmation emails. The false positives were really my personal down fall, because the moment you have to start scanning your spam folder for real content, you've lost the battle. -Sean -- Sean Dague Mid-Hudson Valley [email protected] Linux Users Group http://dague.net http://mhvlug.org
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