Hello, I have just upgrade to Squeeze and this was a problem for me on my machine too.
Symtoms were: Dec 30 02:02:19 hadrian courierd: newmsg,id=0008C03A.4B3AB4AB.00003408, auth=njh: dns; [10.0.0.60] (softdnserr [::ffff:82.152.145.11]) Dec 30 02:02:19 hadrian courierd: started,id=0008C03A.4B3AB4AB.00003408,from=<n...@aelius.com>,module=esmtp,host=ecs.soton.ac.uk,addr=<n...@ecs.soton.ac.uk> Dec 30 02:02:19 hadrian courierd: Waiting. shutdown time=none, wakeup time=none, queuedelivering=1, inprogress=1 Dec 30 02:02:19 hadrian courieresmtp: id=0008C03A.4B3AB4AB.00003408,from=<n...@aelius.com>,addr=<n...@ecs.soton.ac.uk>: DNS lookup failed. Dec 30 02:02:19 hadrian courieresmtp: id=0008C03A.4B3AB4AB.00003408,from=<n...@aelius.com>,addr=<n...@ecs.soton.ac.uk>,status: deferred Dec 30 02:02:19 hadrian courierd: completed,id=0008C03A.4B3AB4AB.00003408 Testing MX lookup was failing: $ testmxlookup ecs.soton.ac.uk Soft error. My solution to the problem was to edit /etc/sysctl.d/bindv6only.conf and set net.ipv6.bindv6only = 0. nick. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
