Am 15.02.2014 22:30, schrieb SW: > I can't see the -D option anywhere in my master.cf file. I think this issue > was occurring before trying that anyway. I have also restarted the Postfix > service. > > host 192.168.0.10 > ;; connection timed out; no servers could be reached
that is the problem > I expected this to timeout as I don't have internal DNS name resolution for > my desktops (never have). Could Postfix be trying to resolve the name of my > desktop before sending the email? since you see resloved hostnames everywhere in the logs: clearly yes it's a damned bad idea at all to not have PTR records on a sane ssh daemon you even can't connect at all many or most network services these days do reverse lookups for connections so fix your DNS or live with the results
