[Dovecot] [Dovecot 1.2.11(NFS used) & dovecot-antispam 1.2]: move message error

Fri Jun 18 22:13:52 EEST 2010

Hello! I am really need help!

I am using dovecot installation on ~700 users with dspam integration via
dovecot-antispam plugin.
Problem in unpredictable result of moving spam-mails from INBOX to Junk
and from Junk to INBOX. In some cases it works fine, but sometimes I see
error like "It's not possible to move the message" in client (roundcube).

Two different samples on same configuration/server. Moving from INBOX into
Junk.
1. Successful moving (roundcube imap debug):
-------------%<------------
[19:05:35]: C: cpy1 UID COPY 2387 "Junk"
[19:05:35]: S: cpy1 OK [COPYUID 1273276423 2387 1280] Copy completed.
[19:05:35]: C: flg UID STORE 2387 +FLAGS (\Deleted)
[19:05:35]: S: * 1471 FETCH (UID 2387 FLAGS (\Deleted \Seen))
[19:05:35]: S: flg OK Store completed.
[19:05:35]: C: exp1 UID EXPUNGE 2387
[19:05:35]: S: * 1471 EXPUNGE
[19:05:35]: S: exp1 OK Expunge completed.
Result: message moved into Junk, dspam retrained. Success.
------------->%------------

2. Unsuccessful moving
-------------%<------------
[19:02:47]: C: cpy1 UID COPY 2386 "Junk"
[19:02:57]: S: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS
ID ENABLE AUTH=PLAIN AUTH=LOGIN]
Dovecot ready.
[19:02:57]: C: cp01 CAPABILITY
[19:02:57]: S: * CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID
ENABLE SORT SORT=DISPLAY THREAD=RE
FERENCES THREAD=REFS MULTIAPPEND UNSELECT IDLE CHILDREN NAMESPACE UIDPLUS
LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH
ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS QUOTA AUTH=PLAIN
AUTH=LOGIN
[19:02:57]: S: cp01 OK Capability completed.
Result: I see moving error in roundcube. Sometimes I see several
duplicates of original message in Junk and original message also presented
in INBOX. Malfunction.
------------->%------------

Similar symptoms also affected while moving message from Junk into INBOX.
One more sample. Junk -> INBOX moving.
-------------%<------------
[20:20:16]: C: cpy1 UID COPY 2859 "INBOX"
[20:20:20]: S: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS
ID ENABLE AUTH=PLAIN AUTH=LOGIN]
Dovecot ready.
[20:20:20]: C: cp01 CAPABILITY
[20:20:20]: S: * CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID
ENABLE SORT SORT=DISPLAY THREAD=RE
FERENCES THREAD=REFS MULTIAPPEND UNSELECT IDLE CHILDREN NAMESPACE UIDPLUS
LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH
ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS QUOTA AUTH=PLAIN
AUTH=LOGIN
[20:20:20]: S: cp01 OK Capability completed.
Result: move failure. Duplicates in INBOX.
------------->%------------

Mails stored on NFS server - Ubuntu 9.10 (Linux storage01
2.6.31-21-generic-pae #59-Ubuntu SMP Wed Mar 24 08:47:55 UTC 2010 i686
GNU/Linux). Indexes now stored locally, but I already try to store them on
NFS. No difference. 

Dovecot and NFS client running under FreeBSD 8.
-------------%<------------
mail01#uname -a
FreeBSD mail01.domain.net 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov 21
15:48:17 UTC 2009    
root at almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
------------->%------------

Mount options. Two variant:
1. 192.164.100.103:/mnt/storage/mailstores  /var/mail/mymail        nfs   
rw,acregmin=0,acregmax=0,acdirmin=0,acdirmax=0  0    0
2(current). 192.164.100.103:/mnt/storage/mailstores   /var/mail/mymail    
  nfs     rw,bg,tcp,nosuid        0       0
In both variants error detected.

-------------%<------------
mail01# dovecot --version
1.2.11
mail01# pkg_info | grep dspam
dovecot-antispam-1.2_4,1 Dovecot plugin to train dspam about spam or false
positives
dspam-3.9.0_1       Bayesian spam filter - stable maintenance version
------------->%------------
Dspam build with direct dspam training possibility, debug and
debug_verbose options.

All installed from ports.
Current dovecot configuration:
-------------%<------------
mail01# dovecot -n
# 1.2.11: /usr/local/etc/dovecot.conf
# OS: FreeBSD 8.0-RELEASE i386  nfs
base_dir: /var/run/dovecot/
log_path: /var/log/dovecot/dovecot.log
protocols: imap pop3
ssl: no
disable_plaintext_auth: no
login_dir: /var/run/dovecot/login
login_executable(default): /usr/local/libexec/dovecot/imap-login
login_executable(imap): /usr/local/libexec/dovecot/imap-login
login_executable(pop3): /usr/local/libexec/dovecot/pop3-login
login_max_processes_count: 256
verbose_proctitle: yes
first_valid_uid: 1
last_valid_uid: 10000
last_valid_gid: 10000
mail_privileged_group: mail
mail_uid: dovecot
mail_gid: mail
mail_location:
maildir:/var/mail/mymail/%d/%n:INDEX=/var/mail/indexes/%d/%n
mail_debug: yes
mail_nfs_storage: yes
mbox_write_locks: fcntl dotlock
mail_executable(default): /usr/local/libexec/dovecot/imap
mail_executable(imap): /usr/local/libexec/dovecot/imap
mail_executable(pop3): /usr/local/libexec/dovecot/pop3
mail_plugins(default): quota imap_quota convert antispam autocreate
mail_plugins(imap): quota imap_quota convert antispam autocreate
mail_plugins(pop3): quota convert autocreate
mail_plugin_dir(default): /usr/local/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3
imap_client_workarounds(default): delay-newmail netscape-eoh
tb-extra-mailbox-sep
imap_client_workarounds(imap): delay-newmail netscape-eoh
tb-extra-mailbox-sep
imap_client_workarounds(pop3):
pop3_client_workarounds(default):
pop3_client_workarounds(imap):
pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh
lda:
  postmaster_address: admin at domain.net
  hostname: mail.domain2.net
  mail_plugins: quota
  mail_plugin_dir: /usr/local/lib/dovecot/lda
  quota_full_tempfail: yes
  sendmail_path: /usr/sbin/sendmail
  rejection_reason: Your message to <%t> was automatically rejected:%n%r
  auth_socket_path: /var/run/dovecot/auth-master
  log_path: /var/log/dovecot/dovecot-deliver.log
  info_log_path: /var/log/dovecot/dovecot-deliver.log
auth default:
  mechanisms: plain login
  default_realm: domain.net
  username_format: %Lu
  failure_delay: 3
  verbose: yes
  debug: yes
  debug_passwords: yes
  passdb:
    driver: sql
    args: /usr/local/etc/dovecot-sql.conf
  userdb:
    driver: sql
    args: /usr/local/etc/dovecot-sql.conf
  socket:
    type: listen
    client:
      path: /var/run/dovecot/auth-client
      mode: 438
    master:
      path: /var/run/dovecot/auth-master
      mode: 384
      user: mailnull
      group: mail
plugin:
  quota_rule: *:storage=50M
  quota: maildir
  convert_mail: mbox:/var/mail/old/%u
  antispam_signature: X-DSPAM-Signature
  antispam_spam: Junk
  antispam_trash: Trash
  antispam_signature_missing: move
  antispam_dspam_result_header: X-DSPAM-Result
  antispam_allow_append_to_spam: yes
  antispam_dspam_binary: /usr/local/bin/dspam
  antispam_dspam_args: --user;%u
  antispam_mail_tmpdir: /tmp
  autocreate: Trash
  autocreate2: Junk
  autocreate3: Sent
  autocreate4: Drafts
  autosubscribe: Trash
  autosubscribe2: Junk
  autosubscribe3: Sent
  autosubscribe4: Drafts
------------->%------------

User, maildir size independence.

Any ideas? What cause? What can do with this?
Really need to solve it.