[Dovecot] dovecot-dspam-plugin not launching dspam

[Peter Fern]

IIRC when you turn mail debugging on in dovecot the plugin should send 
the output of the dspam call to the maillog, should tell you what's 
wrong then...

Stefan Schmidt wrote:

> hello,
>
> i added the dovecot-dspam-plugin [1] to my dovecot-installation. when 
> trying to move a mail out of or into the predefined spamfolder with 
> thunderbird a messagebox shows : "dspam failed" and the message 
> remains in its original position. i am using virtual mail users 
> contained in a postgresql-database [2]. normal imap access and dspam 
> training from the commandline works fine. a posting concerning 
> probably the same issue has been posted on the dspam-mailinglist [3], 
> but there haven't been any helpful replies so far. furthermore i 
> suspect the plugin is missing the --user option when calling dspam, 
> since this seems to be mandatory [4,5], but unfortunately adding this 
> option in the plugin doesn't change its behavior. i am working on a 
> debian system and currently using dovecot 1.0.beta3-3, dspam 
> 3.6.4-2+b1 and the dspam-plugin "for dovecot beta 2 and 3".
>
> 1) calling dspam from the commandline with the same parameters as in 
> the (slightly modified) plugin works fine
>
> :/# su virtual
> :/$ /usr/bin/dspam --user retrain --source=error --stdout --class=spam 
> --signature=4,4434846e237406491211187 --debug
>
> -> /var/log/dspam.debug
>
> No QuarantineAgent option found. Using standard quarantine.
> DSPAM Instance Startup
> input args: /usr/bin/dspam --debug --user retrain --source=error 
> --stdout --class=spam --signature=4,4434846e237406491211187
> pass-thru args:
> processing user retrain
> uid = 0, euid = 0, gid = 0, egid = 101
> loading preferences for user retrain
> Loading preferences for uid 7
> Loading preferences for uid 0
> Loading preferences for uid 0
> default preferences empty. reverting to dspam.conf preferences.
> Loading preferences from dspam.conf
> using /var/spool/dspam/opt-in/local/retrain.dspam as path
> using /var/spool/dspam/opt-out/local/retrain.nodspam as path
> sedation level set to: 0
> loading preferences for user some_virtual_account at mydomain.com
> Loading preferences for uid 4
> Loading preferences for uid 0
> Loading preferences for uid 0
> default preferences empty. reverting to dspam.conf preferences.
> Loading preferences from dspam.conf
> processing signature.  length: 1344
> reversing 112 tokens
> Control: [10 10] [11 9] Delta: [1 -1]
> reclassifying iteration 1 result: 0
> libdspam returned probability of 1.000000
> message result: SPAM
> DSPAM Instance Shutdown.  Exit Code: 0
>
> 2) when dspam is called via the (slightly modified) 
> dovecot-dspam-plugin it aborts (the unmodified version aborts the same 
> way)
>
> -> /var/log/mail.err
>
> dovecot: imap-login: Login: user=<someuser at mydomain.com>, 
> method=plain, rip=123.123.123.123, lip=123.123.123.123
> imap: /usr/bin/dspam --user retrain --source=error --stdout 
> --class=spam --signature=4,4434846e237406491211187
> dspam[25157]: Unable to determine the destination user
> dspam[25157]: DSPAM agent misconfigured: aborting
>
> -> /etc/dspam/dspam.conf [extract]
>
> Home /var/spool/dspam
> StorageDriver /usr/lib/dspam/libpgsql_drv.so
> TrustedDeliveryAgent "/usr/bin/procmail"
> OnFail error
> Trust root
> Trust dspam
> Trust mail
> Trust mailnull
> Trust smmsp
> Trust daemon
> Trust virtual
> TrainingMode teft
> TestConditionalTraining on
> Feature chained
> Feature whitelist
> Algorithm graham burton
> PValue graham
> Preference "spamAction=deliver"
> Preference "signatureLocation=headers"
> AllowOverride trainingMode
> AllowOverride spamAction spamSubject
> AllowOverride statisticalSedation
> AllowOverride enableBNR
> AllowOverride enableWhitelist
> AllowOverride signatureLocation
> AllowOverride showFactors
> AllowOverride optIn optOut
> AllowOverride whitelistThreshold
> HashRecMax              98317
> HashAutoExtend          on  HashMaxExtents          0
> HashExtentSize          49157
> HashMaxSeek             100
> HashConnectionCache     10
> Notifications   off
> PurgeSignatures 14
> PurgeNeutral    90
> PurgeUnused     90
> PurgeHapaxes    30
> PurgeHits1S     15
> PurgeHits1I     15
> LocalMX 127.0.0.1
> SystemLog on
> UserLog   on
> Opt out
> ProcessorBias on
> Include /etc/dspam/dspam.d/
>
> -> /etc/dspam/dspam.d/pgsql.conf [extract]
>
> PgSQLServer 127.0.0.1
> PgSQLPort 5432
> PgSQLUser dspam
> PgSQLPass mypassword
> PgSQLDb libdspam7drvpgsql
> PgSQLVirtualTable          dspam_virtual_uids
> PgSQLVirtualUIDField       uid
> PgSQLVirtualUsernameField  username
>
> -> dspam-headers from samples message
>
> X-DSPAM-Result: Innocent
> X-DSPAM-Processed: Thu Apr  6 03:32:07 2006
> X-DSPAM-Confidence: 0.7524
> X-DSPAM-Probability: 0.0000
> X-DSPAM-Signature: 44346f97188755315134984
>
> ciao, stefan
>
> [1] http://johannes.sipsolutions.net/Projects/dovecot-dspam-integration
> [2] http://www.gjdv.at/snippets/linux/virtual_mail_hosting
> [3] http://www.nuclearelephant.com/projects/dspam/dspam-users/2872.html
> [4] http://www.nuclearelephant.com/projects/dspam/dspam-users/2852.html
> [5] http://www.nuclearelephant.com/projects/dspam/dspam-users/2850.html