> On Wed, 2006-06-28 at 07:10 -0500, Josh Boyer wrote: > There are arguments for it being Exim, which is capable of acting as > simple outgoing relay and is _also_ capable of much more; spam checking, > antivirus, greylisting, etc. -- all without third-party software (other > than SA and ClamAV themselves). I think that's probably the best choice > -- it's easy to configure, well documented, more functional than any of > the alternatives, and has a good security record. It also has complete > and _mature_ support for IPv6, unlike postfix which was recently > observed to be bouncing mail for domains with IPv6-only primary MX. postfix 2.2 added a config option for /etc/postfix/main.cf inet_protocols with the default being ipv4 only so i would have a guess that postfix was not configured correctly https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=197105 filled a bug requesting change in default config Dennis