Y z put forth on 4/28/2010 2:08 AM: > > ---------------------------------------- >> Date: Wed, 28 Apr 2010 01:56:55 -0500 >> From: s...@hardwarefreak.com >> To: postfix-users@postfix.org >> Subject: Re: 'Domain not found' errors after Ubuntu upgrade >> >> Stan Hoeppner put forth on 4/28/2010 1:50 AM: >>> Y z put forth on 4/28/2010 1:36 AM: >>> >>>> Where do I start troubleshooting? >>> >>> Start by making sure that these match: >>> >>> /etc/resolv.conf >>> /var/spool/postfix/etc/resolv.conf > > Yup. Postfix start warns me if they differ. > I tried putting in nameservers there, but that makes it worse: then postfix > (it's supposed to relay) accepts the messages, then can't find te relay > domain, so it bounces them. Ouch.
I've only ever had this name resolution problem once and that's how I solved it, with hints from this list. > Yup. Been starting and stopping for a while now. :-( Did you check nsswitch.conf for 'dns' under 'hosts'? Something broke Postfix' ability to resolve dns. It's not complaining about a library version error, which points to configuration only. Make sure SELinux is _not_ enabled. Turn off any iptables rules you have loaded. -- Stan
