[Dovecot] Dovecot 2.2.7/2.2.8 failing to call dspam with antispam

[Tom Hendrikx]

On 11/25/2013 01:17 PM, Guillaume Hilt wrote:
>     Hello again,
> 
> I'm running Gentoo AMD64 2013 with postfix, mysql, dovecot and dspam :
> dovecot 2.2.8 (it was working fine with 2.2.6 after doing a chmod 4511
> on dspam binary), dspam 3.10.2-r1 and dovecot-antispam-2.0_pre20130429
> (recompiled after each dovecot upgrade).
> 
> I've set dspam to debug, and mail_debug to yes.
> 
> uid 1001 is user vmail (dovecot is running under vmail)
> gid 12 is group mail (vmail is a member, with
> mail,postfix,dspam,dovecot,apache)
> All the necessary users are trusted in dspam configuration.
> 
> Here's my plugin settings :
> antispam_verbose_debug = 1
> antispam_debug_target = syslog
> antispam_backend = dspam
> antispam_allow_append_to_spam = NO
> antispam_skip_from_line = NO
> antispam_spam = Spam
> antispam_trash = Trash
> antispam_signature = X-DSPAM-Signature
> antispam_signature_missing = error
> antispam_dspam_binary = /usr/bin/dspam
> antispam_dspam_args = --user;%u;--deliver=;--source=error;--signature=%%s

Configured to use the mail recipient

> antispam_dspam_spam = --class=spam
> antispam_dspam_notspam = --class=innocent
> antispam_dspam_result_header = X-DSPAM-Result
> 
> When i'm moving an email to the dspam folder, Thunderbird throw me an
> error : Failed to call dspam (email is dropped in the Spam folder
> anyway, but a copy stay on my INBOX)
> 
> ==> /var/log/mail/mail/log <==
> Nov 25 13:01:04 srv1 dovecot: imap: Debug: Loading modules from
> directory: /usr/lib64/dovecot
> Nov 25 13:01:04 srv1 dovecot: imap: Debug: Module loaded:
> /usr/lib64/dovecot/lib90_antispam_plugin.so
> Nov 25 13:01:04 srv1 dovecot: imap: Debug: Added userdb setting:
> plugin/maildir=shadowprojects.org/ghilt/
> Nov 25 13:01:04 srv1 dovecot: imap(ghilt at shadowprojects.org): Debug:
> Effective uid=1001, gid=12, home=/home/vmail/shadowprojects.org/ghilt/
> Nov 25 13:01:04 srv1 dovecot: imap(ghilt at shadowprojects.org): Debug:
> Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no,
> list=yes, subscriptions=yes
> location=maildir:/home/vmail/shadowprojects.org/ghilt/.maildir
> Nov 25 13:01:04 srv1 dovecot: imap(ghilt at shadowprojects.org): Debug:
> maildir++: root=/home/vmail/shadowprojects.org/ghilt/.maildir, index=,
> indexpvt=, control=,
> inbox=/home/vmail/shadowprojects.org/ghilt/.maildir, alt=
> Nov 25 13:01:04 srv1 dovecot: imap(ghilt at shadowprojects.org): Debug:
> Namespace : Using permissions from
> /home/vmail/shadowprojects.org/ghilt/.maildir: mode=0770 gid=default
> Nov 25 13:01:04 srv1 dovecot: imap(ghilt at shadowprojects.org): Debug:
> dspam error:29764 prefix=imap(ghilt at shadowprojects.org):
> Nov 25 13:01:04 srv1 dovecot: imap(ghilt at shadowprojects.org): Debug:
> executing /usr/bin/dspam failed: 13 (uid=1001, gid=12)
> Nov 25 13:01:04 srv1 dovecot: imap: Error:
> Nov 25 13:01:04 srv1 dovecot: imap: Error:
> 
> ==> /var/log/dspam/dspam.debug <==
> 9976: [11/25/2013 13:12:23] DSPAM Instance Startup
> 9976: [11/25/2013 13:12:23] input args: /usr/bin/dspam --user
> ghilt at shadowprojects.org --deliver= --source=error
> --signature=89,52900600118151560172939 --class=spam

Called using the mail recipient

> 9976: [11/25/2013 13:12:23] pass-thru args:
> 9976: [11/25/2013 13:12:23] processing user ghilt at shadowprojects.org
> 9976: [11/25/2013 13:12:23] uid = 1001, euid = 0, gid = 12, egid = 12
> 9976: [11/25/2013 13:12:23] loading preferences for user
> ghilt at shadowprojects.org
> ...
> 9976: [11/25/2013 13:06:08] DSPAM Instance Shutdown.  Exit Code: 99
> 9976: [11/25/2013 13:06:08] process_users() failed on error 9
> 
> If i try to call dspam like this, it works :
> sudo -u vmail /usr/bin/dspam --source=error --class=spam
> --signature=4be87a9f953248352114216 --client --user vmail

Called spam using some other user.

> 
> Any idea ?
> 

The user ghilt at ... is not recognized in your dspam setup. You should
change the antispam config to use a static username, or make dspam
accept your recipient addresses.


Regards,
	Tom