Date: Thu, 10 Aug 2006 09:09:49 +0700 (ICT) From: Olivier Nicole <on@cs.ait.ac.th> To: derek@computinginnovations.com Cc: chris.m@ebit.com.au, freebsd-questions@freebsd.org Subject: Re: Filtering mail based on header contents Message-ID: <200608100209.k7A29nCC034666@banyan.cs.ait.ac.th> In-Reply-To: <6.0.0.22.2.20060809094420.025cc018@mail.computinginnovations.com> (message from Derek Ragona on Wed, 09 Aug 2006 09:47:22 -0500) References: <000201c6bb76$e8056300$8902030a@ebit.com.au> <6.0.0.22.2.20060809094420.025cc018@mail.computinginnovations.com>
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>I have a mail system on which I have recently implemented spamassassin with >Pyzor, DCC and Razor. I am really happy with the tagging accuracy and am >ready to start filtering mail. I know spamassassin can be configured to drop >all mail with a score over a certain amount, but I am concerned about NO SA only tag the mail, it never drops anything. Droping email is a bad attitude if you don't send a bounce, and as it it impossible to bounce a spam, then you should not drop spam email. >dropping false positives. I would really prefer to either drop it in a >folder for each user, or just send them all to a mailbox. > >The system we use has two tiers: mail enters the filtering server running >sendmail, spamassassin Pyzor and DCC, which then sends to a >qmail/courier-imap server. I would prefer to have the actual mailbox server >drop the mail into a spam folder in each user's mailbox, but I realise that >this could be a bit ambitious. Also, not all of the users use IMAP (about >half use POP) so differentiating between IMAP and POP users is important. >Does anyone have any suggestions? I solved that by putting email tagged as spam into quarantine. Once a day I submit to the users an email summary of their quarantine and they can recover any message by replying. >Failing that, is there an easy way to filter based on header content >(Spamassassin score) in Sendmail on the filtering machine, or would I have >to implement procmail or some such to redirect all spam to one mailbox? But I do that with procmail, at the delivery level :) http://www.cs.ait.ac.th/laboratory/email/quarantine.shtml Best regards, Olivier
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