On Wed, Nov 28, 2012 at 10:44 PM, Reindl Harald <h.rei...@thelounge.net> wrote: > Am 29.11.2012 07:40, schrieb Andy Brody: >> On Wed, Nov 28, 2012 at 10:35 PM, Reindl Harald <h.rei...@thelounge.net> >> wrote: >>> Am 29.11.2012 06:57, schrieb Andy Brody: >>>>> Maybe the "host lookup issues" here will help >>>>> http://www.postfix.org/LINUX_README.html >>>> >>>> Thanks for the pointer. I'd seen that page, though, and "multi on" is >>>> already set in /etc/host.conf >>> >>> what about dnsmasq which is a very easy to setup dns-server >>> which can use /etc/hosts also as source for dns-answers? >>> >>> a dns-resolver is generally not a bad idea on a mailserver >>> >> >> Right, that would definitely be an option. I was hoping to avoid it >> since I thought postfix would be able to handle the lookups itself. >> This mail server does not generally talk to the public Internet, hence >> the lack of DNS. > > and you have no dns in your LAN? > why?
The nodes all have their /etc/hosts managed by puppet, and it's a small enough cluster that running DNS isn't really worth the overhead and security risk.