Hello, i am in a single server 2007/2010 enviroment. I finished moving all the mailboxes from 2007 and am working on decomissioning. all along the 2007 server has been used as the source server in my internet send connector.
Today i went to change it to use the 2010 server. the submission queue backs up and reports that their is a loop. I change it back to the 2007 server and it flushes them thru.
I ran the mailflow troubleshooter when it was looping and it said nothing was wrong.