[Dovecot] Dovecot problem in RHEL4

[Mart Pirita]

Tere.
>
> I have some problem with dovecot in RHEL4.
> IMAP server is dropping connection after woorking for some time.
> It seems that the login process count keeps increasing?(stale login
> process are not removed)
> Any points to sort the problem?

Same here, atleast once in week dovecot dies and process count seems
increasing:

    ??dovecot???dovecot-auth???*33200*[dovecot-auth]*
    ?         ??17*[imap]
    ?         ??26*[imap-login]
    ?         ??15*[pop3-login]


And like I said before, it's all started since rc6, dovecot.conf includes:

base_dir = /var/run/dovecot/
protocols = imap imaps pop3 pop3s
ssl_cert_file = /etc/ssl/certs/dovecot.pem
ssl_key_file = /etc/ssl/private/dovecot.pem
disable_plaintext_auth = no
shutdown_clients = yes
log_timestamp = "%Y-%m-%d %H:%M:%S "
login_process_size = 128
login_process_per_connection = yes
login_processes_count = 15
login_max_processes_count = 640
login_log_format_elements = %u %r %m %c
max_mail_processes = 3072
verbose_proctitle = yes
verbose_ssl = yes
mail_extra_groups = mail
default_mail_env =
maildir:%h/Maildir:INDEX=/var/spool/dovecot/index/%u:CONTROL=/var/spool/dovecot/c
mmap_disable = yes
maildir_copy_with_hardlinks = no
mbox_write_locks = dotlock fcntl
mbox_lock_timeout = 300
mbox_dotlock_change_timeout = 180
protocol imap {
login_executable = /usr/local/dovecot/libexec/dovecot/imap-login
mail_executable = /usr/local/dovecot/libexec/dovecot/rawlog
/usr/local/dovecot/libexec/dovecot/imap
mail_executable = /usr/local/dovecot/libexec/dovecot/imap
mail_plugin_dir = /usr/local/dovecot/modules/imap
imap_client_workarounds = outlook-idle netscape-eoh tb-extra-mailbox-sep
delay-newmail
}
protocol pop3 {
login_executable = /usr/local/dovecot/libexec/dovecot/pop3-login
mail_executable = /usr/local/dovecot/libexec/dovecot/pop3
pop3_uidl_format = %08Xu%08Xv
pop3_logout_format = retr=%r/%R, del=%d/%m, size=%s
mail_plugin_dir = /usr/local/dovecot/modules/pop3
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
}
auth_process_size = 512
auth_verbose = yes
auth_worker_max_count = 90
auth default {
  mechanisms = plain
  passdb pam {
}
  userdb passwd {
  }
  user = root
}
plugin {
}



-- 
Mart