[Pkg-exim4-users] spamassassin headers
Dermot Paikkos
dermot at sciencephoto.com
Thu Apr 20 07:27:23 UTC 2006
What does your local.cf have for report_safe? I thought that this
controlled the X-Spam-headers
...man spamassassin.conf
"If this option is set to 0, incoming spam is only modified by adding
some X-Spam- headers and no changes will be made to the body. In
addition, a header named X-Spam-Report will be added to spam. You can
use the remove_header option to remove that header after setting
report_safe to 0"
Or am I barking up the wrong tree?
Dp.
On 20 Apr 2006 at 6:58, Chris wrote:
> I have set up exim4-daemon-heavy/clamd/spamd on unstable.
>
> Debian Sid GNU/linux 2.6.16-1-k7
> clamav 0.88.1-1 antivirus scanner for Unix
> clamav-base 0.88.1-1 base package for clamav,
> clamav-daemon 0.88.1-1 antivirus scanner daemon
> clamav-docs 0.88.1-1 documentation package
> clamav-freshclam 0.88.1-1 downloads clamav virus
> database exim4-base 4.61-1 support files for all
> exim MTA exim4-config 4.61-1 configuration for the
> exim MTA exim4-daemon-heavy 4.61-1 exim MTA (v4) daemon
> spamassassin 3.1.0a-2 Perl-based spam filter using
>
>
> After a bit of fiddling the basic setup works really well: outgoing
> mail gets send out and incoming mail is tested by clamav and spamd
> before being filtered by ~/.forward and subsequently delivered into a
> Maildir-folder. Kinda like advertised ;-)
>
> Something seems to go wrong with the headers, reporting and ultimately
> delivery of spam-positives though.
>
> I have a similar setup running exim4-light with spamassassin via
> router-transport on Sarge/Debian-stable. There the "X-Spam-Flag: YES"
> header is inserted and the spam-body of a positive is kept out of view
> and attached to a warning message.
>
> Here exim has the protective message hiding in the headers under
> "X-Spam_report" (see below), leaving the spam-body unshielded in the
> Inbox, in full view for the unsuspecting user. This is neither a good
> nor a pretty thing.
>
> Not setting the header "X-Spam-Flag: YES" on spam breaks the filtering
> with .forward and Spam gets delivered into the inbox. I cannot seem to
> set this header manually: adding "X-Spam-Flag: YES\n\" to the
> ACL(below) ends up as header: "X-ACL-Warn: X-Spam-Flag: YES"
>
> Negatives get no X-Spam headers at all by default, which is confusing
> since it took a trip to /var/log/syslog (or /var/log/mail.info) to
> find out that spamd actually processed the message. Is it exim that
> doesn't pass on the X-Spam headers set by spamassassin? Why? I sure
> didn't override that in order to have to set different ones manually
> in exim. Is it a bug or a feature?
>
> Example of ACL + SPAM
>
> ACL:
> warn
> spam = Debian-exim
> message = X-Spam_score: $spam_score\n\
> X-Spam_score_int: $spam_score_int\n\
> X-Spam_bar: $spam_bar\n\
> X-Spam_report: $spam_report
>
> SPAM (full message source):
>
> ------begin message source------
> Return-path: <nws at cevnet.mine.nu>
> Envelope-to: nws at cevnet.mine.nu
> Received: from localhost ([127.0.0.1]) by cevnet.mine.nu with esmtp
> (Exim 4.61) (envelope-from <nws at cevnet.mine.nu>) id 1FWNSh-0004NS-Vh
> for nws at cevnet.mine.nu; Thu, 20 Apr 2006 02:56:00 +0200 Subject: test
> From: Chris <nws at cevnet.mine.nu> To: nws at cevnet.mine.nu Content-Type:
> text/plain Date: Thu, 20 Apr 2006 02:55:59 +0200 Message-Id:
> <1145494559.20239.2.camel at cevnet> Mime-Version: 1.0 X-Mailer:
> Evolution 2.6.0 Content-Transfer-Encoding: 7bit X-Spam_score: 998.4
> X-Spam_score_int: 9984 X-Spam_bar:
> +++++++++++++++++++++++++++++++++++++++++++++++++++ X-Spam_report:
> Spam detection software, running on the system "cevnet.mine.nu", has
> identified this incoming email as possible spam. The original message
> has been attached to this so you can view it (if it isn't spam) or
> label similar future email. If you have any questions, see the
> administrator of that system for details. Content preview:
> CUT--->GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL<---CUT Chris
> <nws at cevnet.mine.nu> [...] Content analysis details: (998.4 points,
> 5.0 required) pts rule name description ----
> ----------------------
> -------------------------------------------------- -1.8 ALL_TRUSTED
> Passed through trusted hosts only via SMTP 1000 GTUBE BODY:
> Generic Test for Unsolicited Bulk Email 2.5 BAYES_40 BODY:
> Bayesian spam probability is 20 to 40% [score:0.3348] -2.3 AWL
> AWL: From: address is in the auto white-list X-Evolution-Source:
> imap://chris@localhost/
>
>
> CUT--->GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL<---CUT
>
>
> -----end message source------
>
>
> please cc me
>
> Thanks,
> --
> Chris <nws at cevnet.mine.nu>
>
>
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