[Dovecot] Authentication fails

[CJ Keist]

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Been running dovecot 1.1.2 for about a month now.  I Have strange issue
that I have not been able to trouble shoot.  What I'm seeing is that
dovecot runs along just fine for about 4 days, and then it will just
stop authenticating everyone (IMAP and POP).  No errors in the logs
other than all authentication attempts comes out as password mismatch.
The only fix is to stop and restart dovecot.

% ./dovecot -n
# 1.1.2: /userM/mail-services/dovecot/etc/dovecot.conf
Warning: fd limit 256 is lower than what Dovecot can use under full load
(more than 3072). Either grow the limit or change
login_max_processes_count and max_mail_processes settings
base_dir: /userM/mail-services/dovecot/var/run/dovecot/
protocols: imap imaps pop3 pop3s
ssl_cert_file: /userM/mail-services/dovecot/etc/ssl/dovecot.pem
ssl_key_file: /userM/mail-services/dovecot/etc/ssl/privkey.pem
ssl_parameters_regenerate: 0
ssl_cipher_list: MEDIUM:!LOW
disable_plaintext_auth: no
login_dir: /userM/mail-services/dovecot/var/run/dovecot/login
login_executable(default):
/userM/mail-services/dovecot/libexec/dovecot/imap-login
login_executable(imap):
/userM/mail-services/dovecot/libexec/dovecot/imap-login
login_executable(pop3):
/userM/mail-services/dovecot/libexec/dovecot/pop3-login
login_greeting: Cyrus ready.
login_max_processes_count: 1024
max_mail_processes: 1024
mail_location: mbox:~/:INBOX=/userM/mail/%u
mail_debug: yes
mmap_disable: yes
mail_nfs_index: yes
mbox_lock_timeout: 60
mbox_dotlock_change_timeout: 60
mail_executable(default): /userM/mail-services/dovecot/libexec/dovecot/imap
mail_executable(imap): /userM/mail-services/dovecot/libexec/dovecot/imap
mail_executable(pop3): /userM/mail-services/dovecot/libexec/dovecot/pop3
mail_plugin_dir(default): /userM/mail-services/dovecot/lib/dovecot/imap
mail_plugin_dir(imap): /userM/mail-services/dovecot/lib/dovecot/imap
mail_plugin_dir(pop3): /userM/mail-services/dovecot/lib/dovecot/pop3
auth default:
  mechanisms: plain login
  verbose: yes
  debug: yes
  passdb:
    driver: pam
  passdb:
    driver: passwd
    args: blocking=yes
  userdb:
    driver: passwd
    args: blocking=yes
  socket:
    type: listen
    client:
      path: /var/lib/postfix/private/auth
      mode: 438
      user: postfix
      group: postfix
    master:
      path: /userM/mail-services/dovecot/var/run/dovecot//auth-master
      mode: 384

This is on Solaris 10, using LDAP for authentication.
Any ideas on how to trouble shoot what might be going on?


- --
C. J. Keist                     Email: cj.keist at colostate.edu
UNIX/Network Manager            Phone: 970-491-0630
Engineering Network Services    Fax:   970-491-5569
College of Engineering, CSU
Ft. Collins, CO 80523-1301

All I want is a chance to prove 'Money can't buy happiness'
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