Since I had to figure out how to limit outbound traffic by domain today I thought I would post the procedure for everyone to enjoy. Listed below are the configuration changes that I made to our main postfix gateway server. Add the following lines to /etc/postfix/master.cf. You could also copy the smtp line and rename [...]
Archive for July 30th, 2010
30 Jul
Concurrent Connections
I have noticed over the last few days that we have had Roadrunner messages in our main e-mail gateway stuck in our queue with the following error: 56FE71501A1C 1695 Fri Jul 30 08:32:19 noreply@nowhere.com (host hrndva-smtpin02.mail.rr.com[71.74.56.244] refused to talk to me: 421 4.7.1 – Connection refused – - Too many concurrent connections from source IP) [...]
