On Sun, May 25, 2008 at 11:42 AM, Ian Blackwell wrote: > Bernd Bartmann wrote: >> >> /var/log/maillog: >> AUTH failure (LOGIN): authentication failure (-13) SASL(-13): >> authentication failure: checkpass failed >> >> /var/log/messages: >> saslauthd[3665]: do_auth : auth failure: [user=username] >> [service=smtp] [realm=] [mech=shadow] [reason=Unknown] >> >> Does someone have an idea how to debug this further, esp. how to find >> the real reason as the message [reason=Unknown] is not very helpful at >> all. > > Is saslauthd still running? Could it have failed or not started if the > server has rebooted? Thanks Ian. That's indeed the reason. "service saslauthd status" gives "saslauthd dead but subsys locked". Now, what could be the reason why saslauthd was not running any more? cu, Bernd.