exchange 2010 outbound send connnector loop

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.

thoughts?
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BBQSTEAKAsked:
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BBQSTEAKConnect With a Mentor Author Commented:
Hey all, I figured it out.

Whatever DNS server my 10 server was pointing at was doing something weird, somehow.  I pointed it to another DNS server and everything started working right away.   No idea..

Thanks
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AkhaterConnect With a Mentor Commented:
how is the connector setup ? is it setup to use a smart host connector ? or use mx ?
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AkhaterCommented:
glad it was sorted out
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BBQSTEAKAuthor Commented:
na
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