I have exchange server 2010 SP1. I have two edge server. Users sent around 2000 email to inform other users both internal and external. We get the message error:
451 4.4.0 Primary target IP address responded with: "421 4.7.0 Too many error; closing connection". Attempted to alternate host, but that did not succeed....
Noted: I have track log with my Fortimail, it has around 1000 email was sent. Other email can sent/recieve normally.
Could you tell what is the problem.