[Dovecot] Dovecot antispam plugin bug: got an empty message
Petr Bravenec
petr at bravenec.eu
Sat Jun 9 23:23:05 EEST 2012
It is few months ago I requested help with combination dovecot - dovecot-
antispam plugin and dspam.
Now I got into troubles with a lot of spam delivering to users inbox. Problem
described bellow is now better hidden but stil remains:
When moving a message from INBOX to Junk, dspam got an empty message.
I made a wrapper about dspamc and there is no input on stdio. The dspam was
not trained (got an empty message).
Looking to source code of dspam and antispam plugin I suspect the dovecot not
to sending any content to plugin when moving from inbox to junk.
Petr Bravenec
Dne Wednesday 25 of January 2012 17:19:18 Tom Hendrikx napsal(a):
> On 25-01-12 08:05, Petr Bravenec wrote:
> > Few weeks ago I upgraded dovecot from 1.2 to 2.0.16 and antispam plugin
> > to 2.0_pre20101222. Since the upgrade I'm not able to move messages to
> > my Junk folder. In the maillog I have found this message:
> >
> > dspam[25060]: empty message (no data received)
>
> Gentoo has included the antispam plugin from Johannes historically, but
> added the fork by Eugene to support upgrades to dovecot 2.0. It is not
> really made clear by the gentoo ebuild is that the forked plugin needs a
> slightly different config.
>
> I use the config below with dovecot 2.0.17 and a git checkout for
> dovecot-antispam:
>
> ===8<========
> plugin {
> antispam_signature = X-DSPAM-Signature
> antispam_signature_missing = move
> antispam_spam_pattern_ignorecase = Junk;Junk.*
> antispam_trash_pattern_ignorecase = Trash;Deleted Items;Deleted
> Messages
>
> # Backend specific
> antispam_backend = dspam
> antispam_dspam_binary = /usr/bin/dspamc
> antispam_dspam_args =
> --user;%u;--deliver=;--source=error;--signature=%%s
> antispam_dspam_spam = --class=spam
> antispam_dspam_notspam = --class=innocent
> #antispam_dspam_result_header = X-DSPAM-Result
> }
>
>
> --
> Regards,
> Tom
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