[Dovecot] Unable to use dovecot-antispam plugin

[Xavier Claude]

Hello everybody,

I'm trying to use the Dovecot antispam on Debian Wheezy (dovecot version 2.1.7), but it's not working, each time I put a mail in the "Spam" folder, it is send in its original folder. What bother me the most is that I don't see anything in the log. Here is my dovecot config related to the antispam plugin :

plugin {
  antispam_allow_append_to_spam = yes
  antispam_backend = dspam
  antispam_debug_target = syslog
  antispam_dspam_args = --user;%Lu;--deliver=spam,innocent;--source=error;--signature=%%s
  antispam_dspam_binary = /usr/bin/dspam
  antispam_dspam_notspam = --class=innocent
  antispam_dspam_result_header = X-DSPAM-Result
  antispam_dspam_spam = --class=spam
  antispam_signature = X-DSPAM-Signature
  antispam_signature_missing = error
  antispam_spam = SPAM;Spam
  antispam_trash = trash;Trash;Deleted Items; Deleted Messages
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}

protocol imap {
  mail_plugins = " antispam"
}

And in the log, the only thing I see is the plugin initialization :

Jul 27 13:18:05 twoflowers imap: antispam: plugin initialising (2.0-notgit)
Jul 27 13:18:05 twoflowers imap: antispam: "SPAM" is exact match spam folder
Jul 27 13:18:05 twoflowers imap: antispam: "Spam" is exact match spam folder
Jul 27 13:18:05 twoflowers imap: antispam: no unsure folders
Jul 27 13:18:05 twoflowers imap: antispam: "trash" is exact match trash folder
Jul 27 13:18:05 twoflowers imap: antispam: "Trash" is exact match trash folder
Jul 27 13:18:05 twoflowers imap: antispam: "Deleted Items" is exact match trash folder
Jul 27 13:18:05 twoflowers imap: antispam: " Deleted Messages" is exact match trash folder
Jul 27 13:18:05 twoflowers imap: antispam: allowing APPEND to spam folders
Jul 27 13:18:05 twoflowers imap: antispam: dspam binary set to /usr/bin/dspam
Jul 27 13:18:05 twoflowers imap: antispam: dspam result set to X-DSPAM-Result
Jul 27 13:18:05 twoflowers imap: antispam: dspam extra arg --user
Jul 27 13:18:05 twoflowers imap: antispam: dspam extra arg xavier
Jul 27 13:18:05 twoflowers imap: antispam: dspam extra arg --deliver=spam,innocent
Jul 27 13:18:05 twoflowers imap: antispam: dspam extra arg --source=error
Jul 27 13:18:05 twoflowers imap: antispam: dspam extra arg --signature=%s
Jul 27 13:18:05 twoflowers imap: antispam: signature header line is "X-DSPAM-Signature"

Thank you for your help.
-- 
Xavier Claude
claude.xavier at gmail.com