[Dovecot] auth: Error: LDAP: Connection lost to LDAP server, reconnecting

Angel L. Mateo amateo at um.es
Wed Aug 31 13:51:31 EEST 2011

El 31/08/11 12:31, Angel L. Mateo escribió:
> * When openldap closes the connection because of the idle timeout, it
> sends a FIN packet. When dovecot needs the connections, it simply opens
> a new connection (without any log message).
> * When my load balancer closes the connection, it doesn't send anything,
> so dovecot thinks the connection is active. So, when auth needs it, it
> tries to send the search, then load balancer sends a RST packet, so
> dovecot logs the message and opens a new connection.
> So the solution is to configure oldap idletimeout parameter, dovecot
> auth_cache_ttl and load balancer timeout in order to avoid this last
> timeout to be reached.
	In fact, you could configure dovecot auth_cache_ttl bigger than the 
other, it doesn't apply. You need to configure it only if you don't want 
the connection to be really closed. If you just want to not log any 
message, configuring slapd timeout less than load balancer timeout is 

Angel L. Mateo Martínez
Sección de Telemática
Área de Tecnologías de la Información       _o)
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