[Dovecot] PAM ISSUE (auth-worker)

[Philip Coackley]

Hello

 

ISSUE: Intermittently getting username and password authentication in 
clients both OUTLOOK 2007 and latest Thunderbird, indicating that the 
client is not authenticated with the server. Ie the username and 
password dialogue constantly reappears.


This only appears as more users logged into the system.

 

TEMP FIX: Restart Dovecot.

 

LOG FILES

Mail.err

 Jun  7 15:23:07 mail dovecot: auth-worker(default): ltdb: 
tdb(/var/lib/samba/group_mapping.ldb): tdb_mmap failed for size 77824 
(Cannot allocate memory)
Jun  7 15:23:10 mail dovecot: auth(default): 
worker-server(shepherb,81.152.245.13): Aborted: Worker process died 
unexpectedly
Jun  7 15:23:10 mail dovecot: child 4268 (auth-worker) killed with signal 11
Jun  7 15:46:00 mail dovecot: auth-worker(default): ltdb: 
tdb(/var/lib/samba/group_mapping.ldb): tdb_mmap failed for size 77824 
(Cannot allocate memory)


Earlier in the log
Jun  7 12:08:02 mail dovecot: auth-worker(default): pam(xxx): 
pam_start() failed: Critical error - immediate abort



FILESYSTEM:
EXT3 -


DOVECOT CONFIG:
# 1.1.11: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.31-21-server x86_64 Ubuntu 9.10
log_timestamp: %Y-%m-%d %H:%M:%S
listen: 127.0.0.1:143
ssl_listen: *:993
ssl_cert_file: /etc/exim4/exim.crt
ssl_key_file: /etc/exim4/exim.key
ssl_cipher_list: ALL:!LOW:!SSLv2
login_dir: /var/run/dovecot/login
login_executable: /usr/lib/dovecot/imap-login
login_greeting: Ready.
mail_privileged_group: mail
mail_location: maildir:~/Maildir
auth default:
  worker_max_count: 60
  worker_max_request_count: 25
  passdb:
    driver: pam
  userdb:
    driver: passwd