hi,

I see in dovecots logfile some error messages:

Sep 29 15:33:43 auth(default): Error: LDAP: Connection lost to LDAP server, reconnecting Sep 29 15:34:15 auth(default): Error: LDAP: Connection lost to LDAP server, reconnecting Sep 29 15:34:50 auth(default): Error: LDAP: Connection lost to LDAP server, reconnecting Sep 29 15:35:22 auth(default): Error: LDAP: Connection lost to LDAP server, reconnecting Sep 29 15:36:01 auth(default): Error: LDAP: Connection lost to LDAP server, reconnecting Sep 29 15:36:37 auth(default): Error: LDAP: Connection lost to LDAP server, reconnecting Sep 29 15:37:16 auth(default): Error: LDAP: Connection lost to LDAP server, reconnecting Sep 29 15:37:52 auth(default): Error: LDAP: Connection lost to LDAP server, reconnecting Sep 29 15:38:24 auth(default): Error: LDAP: Connection lost to LDAP server, reconnecting

I don't know, what could be the problem. I upgraded Dovecot from 1.2.13 to 1.2.14 to solving the problem, but ... no success.

Our LDAP Server is 2.4.23 and works for our network without any problems.

If I try to use ldapsearch from the Dovecot host, while I see the messages, ldapsearch works withouch any timeout. I enabled caching for auth too, but the problem still exists.

My DoveCot Config:

http://pastebin.com/W7zHf4fT

the LDAP part:

hosts = ldap ldap2 auth_bind = yes ldap_version = 3 base = cn=accounts, dc=foo user_attrs = postalAddress=domain, homeDirectory=/imap/spool/%d/%1n/%n, myMailQuota=quota_rule=*:storage=%$M user_filter = (&(objectClass=posixAccount)(uid=%n)) pass_attrs = postalAddress=domain, uid=user, userPassword=password pass_filter = (&(objectClass=posixAccount)(uid=%n)) default_pass_scheme = MD5

any suggestions?

cu denny

ps. when does dovecot switches to ldap2?