Hello Everyone,

First wanted to say thanks for any help in advance.

I have a clustered mail system each running on centos 5.2. I have a
test box that I am running the newest version on dovecot on and I am
getting some random authnication failed errors. Here is the error below:

Nov 04 17:31:22 auth(default): Error: worker-server(xxx@xxxx.com):
Aborted: Lookup timed out Nov 04 17:31:23 auth(default): Info: client out: FAIL 2 user=xxx@xxxx.com temp

The thing is, the errors only show when the user is attempting to send
a message.

Here is my dovecot -n

# 1.2.5: /etc/dovecot.conf # OS: Linux 2.6.18-92.el5 x86_64 CentOS release 5.2 (Final) nfs log_path: /var/log/dovecot login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_process_size: 512 login_processes_count: 500 login_max_processes_count: 5000 login_max_connections: 1000 max_mail_processes: 5000 mail_max_userip_connections: 2000 verbose_proctitle: yes first_valid_uid: 5000 first_valid_gid: 5000 mail_location: maildir:/export/monster/mail/%d/%n:INDEX=/export/ monster/mail/%d/%n mail_debug: yes mmap_disable: yes mail_nfs_storage: yes mail_nfs_index: yes maildir_stat_dirs: yes mbox_read_locks: dotlock mbox_write_locks: dotlock mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_process_size: 512 mail_plugins(default): mail_log mail_plugins(imap): mail_log mail_plugins(pop3): mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 pop3_save_uidl(default): no pop3_save_uidl(imap): no pop3_save_uidl(pop3): yes pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): %08Xv%08Xu lda: postmaster_address: xxx@xxxx.net mail_plugins: sieve log_path: /var/log/dovecot-deliver.log info_log_path: /var/log/dovecot-deliver.log auth_socket_path: /var/run/dovecot/auth-master auth default: mechanisms: plain login failure_delay: 1 verbose: yes debug: yes debug_passwords: yes worker_max_count: 500 passdb: driver: sql args: /etc/dovecot/dovecot-sql.conf userdb: driver: sql args: /etc/dovecot/dovecot-sql.conf socket: type: listen client: path: /var/spool/postfix/auth mode: 432 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 384 user: mailowner group: mailowner plugin: mail_log_events: delete undelete expunge copy mailbox_delete
mailbox_rename

Also here is my dovecot-sql.conf

user_query = SELECT '/export/monster/mail/%d/%n' as home, 'maildir:/ export/monster/mail/%d/%n:INDEX=/export/monster/mail/%d/%n' as mail,
5000 AS uid, 5000 AS gid, concat('*:bytes=', quota) AS quota_rule FROM
mailbox WHERE username ='%u' AND active ='1' password_query = SELECT MB.password FROM (mailbox as MB) LEFT JOIN
domain as D ON (D.id=MB.domain_id AND D.active='1') WHERE MB.username
= '%u' AND MB.active = '1' AND (D.id IS NOT NULL OR (MB.domain_id=0
and MB.name='SASL'))

I have disabled user prefetch because for some reason, I get this
error when it is active:

Nov 04 17:05:25 auth(default): Info: prefetch (xxx@xxxx.net,xxx.xxx.xxx.xxx): passdb didn't return userdb entries,
trying the next userdb

Thanks for any help you can offer.

Jeffrey Nikoletich