On Sat, 2008-02-16 at 21:46 +0800, Frank Wang wrote:
Hi, Our mail system uses dovecot-1.0-1.2.rc15.el5 in Centos-5.1 as our imap server. It connects to a pgsql database in another server as authentication backend. It works fine except occasionally fails to reconnect to the database after temporary network block, and dovecot has to be restarted to work again in such case.
It's most likely fixed in newer versions. For example there is one PostgreSQL fix in v1.0.4 and another in v1.0.rc26. There may be other fixes as well.
You can find newer Dovecot RPMs for CentOS 5 from atrpms.net.
Google led me to
http://www.dovecot.org/list/dovecot/2008-January/027899.html. I followed the thread to modify my dovecot-sql.conf containing "connect = host=pgsql1 host=pgsql2 dbname=xxxx user=xxxx"
Currently this works only with MySQL.