I just added a second Exchange 2010 server (typical install) last night. Since then, all outgoing email to external sources is now being held in queue on the new Exchange server. I expect that this has to do with a receive connector configuration. However, I'm not having any luck.
A little extra background...
I just retired my last Exchange 2003 server prior to installing the new (2nd) Exchange 2010 server. In my test environment, I had both Exchange 2010 servers and 1 Exchange 2003 server and had no issues. However, upon decommission and removal of the Exchange 2003 server, outgoing email to external addresses broke.
All internal email is working fine and we are receiving external emails normally. It is just outgoing to external addresses that are impacted. We have 700 in queue and building.
Please advise if you have any suggestions.