I downloaded the source code plug-in version 1.3 from http://johannes.sipsolutions.net/download/dovecot-antispam/ Unpack and make from this .config file:

 BACKEND=mailtrain
 DOVECOT=/usr/include/dovecot
 INSTALLDIR=/usr/lib/dovecot/modules/imap
 USER=root
 GROUP=root
 DEBUG=syslog
 DEBUG_VERBOSE=1
 PLUGINNAME=antispam

Dovecot cofing file:

 protocol imap {
   login_executable = /usr/lib/dovecot/imap-login
   mail_executable = /usr/lib/dovecot/imap
   mail_plugins = quota imap_quota antispam
 }

 plugin {
   antispam_mail_sendmail = /usr/bin/sa-learn
   antispam_mail_spam = --spam
   antispam_mail_notspam = --ham
   antispam_mail_tmpdir = /tmp
   antispam_trash_pattern_ignorecase = trash;Deleted *
   antispam_spam_pattern_ignorecase = junk;spam
 }

When move message into\from "Spam" folder get error:

 [SERVERBUG] failed to send email

In syslog:

 imap: antispam: plugin initialising (1.3-notgit)
 dovecot: IMAP(test@u-kon.ru): Loading modules from directory: 

/usr/lib/dovecot/modules/imap dovecot: IMAP(test@u-kon.ru): Module loaded: /usr/lib/dovecot/modules/imap/lib10_quota_plugin.so dovecot: IMAP(test@u-kon.ru): Module loaded: /usr/lib/dovecot/modules/imap/lib11_imap_quota_plugin.so dovecot: IMAP(test@u-kon.ru): Module loaded: /usr/lib/dovecot/modules/imap/lib90_antispam_plugin.so dovecot: IMAP(test@u-kon.ru): Effective uid=8, gid=12, home=(none) dovecot: IMAP(test@u-kon.ru): Quota root: name= backend=maildir args= dovecot: IMAP(test@u-kon.ru): Quota rule: root= mailbox=* bytes=2134810624 messages=0 dovecot: imap-login: Login: user=test@u-kon.ru, method=PLAIN, rip=192.168.10.59, lip=192.168.10.77, TLS imap: antispam: "trash" is case-insensitive wildcard match trash folder imap: antispam: "deleted *" is case-insensitive wildcard match trash folder imap: antispam: "SPAM" is exact match spam folder imap: antispam: "junk" is case-insensitive wildcard match spam folder imap: antispam: "spam" is case-insensitive wildcard match spam folder imap: antispam: no unsure folders imap: antispam: mail backend spam address --spam imap: antispam: mail backend not-spam address --ham imap: antispam: mail backend sendmail /usr/bin/sa-learn imap: antispam: mail backend sendmail arg --single imap: antispam: mail backend tmpdir /tmp dovecot: IMAP(test@u-kon.ru): maildir: data=/var/spool/mail/test@u-kon.ru dovecot: IMAP(test@u-kon.ru): maildir++: root=/var/spool/mail/test@u-kon.ru, index=, control=, inbox=/var/spool/mail/test@u-kon.ru dovecot: IMAP(test@u-kon.ru): Namespace : Using permissions from /var/spool/mail/test@u-kon.ru: mode=0700 gid=-1 imap: antispam: mailbox_is_unsure(Junk): 0 imap: antispam: mailbox_is_trash(INBOX): 0 imap: antispam: mailbox_is_trash(Junk): 0 imap: antispam: mail copy: from trash: 0, to trash: 0 imap: antispam: mailbox_is_spam(INBOX): 0 imap: antispam: mailbox_is_spam(Junk): 1 imap: antispam: mailbox_is_unsure(INBOX): 0 imap: antispam: mail copy: src spam: 0, dst spam: 1, src unsure: 0 imap: antispam: running mailtrain backend program /usr/bin/sa-learn imap: antispam: running mailtrain backend program /usr/bin/sa-learn imap: antispam: run program failed with exit code 9

Get sa-learn output from help this script:

 #!/bin/bash

 (
   id -a
   sa-learn
   rc=$?
   echo "exit code $rc"
   exit $rc
 ) > /tmp/antispam.out.$$ 2> /tmp/antispam.err.$$

antispam.err - contains output as "sa-learn --help"

So this means that the call comes without any parameters or with incorrect parameters. I need this to work, please help.