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) [...]
