On Wed, 2006-06-28 at 10:47 -0500, Dennis Gilmore wrote: > 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 No, it was a bug -- the system in question didn't actually have IPv6 addresses configured and it was failing to deliver mail to infradead.org, claiming (IIRC) that the highest priority MX host was the local host. I believe the diagnosis was that it interpreted the IPv6-only primary MX host 'phoenix.ipv6.infradead.org' as if it were the Legacy IP address 0.0.0.0 -- then claimed that it was a local address, and hence the mail was undeliverable since infradead.org was obviously not configured as a local domain on that machine. -- dwmw2