Exchange2003 cluster problem

[davetherave100]

Hi
Have just been testing clustering two exchange servers and have come to a problem i cant seem to solve.
I have built a domain, with one ad server, one exchange2000 server going through an ISA server. Mail worked fine in and out.
I then introduced two more servers in a cluster to sit along side the original mail server. Clustering is working fine, but when i move a mailbox from the original server to the clustered servers i can only get mail to come in. Any mail that is sent out just sits in the outbound queue.
Mail comes in so external dns should be ok, and i think my internal dns is ok.
Mail just doesnt get from the mail server to the ISA server.
I changed anything relating to the origianl mail server to correspond to the cluster, but no mail flows out.
Any ideas anyone?.. must be something simple but im at a loss at the moment
Thanks

 

[Davetoo]

I'm sorry...I pointed you to the wrong forum...meant to direct you to the Exchange 2003 forum:

http://www.tek-tips.com/threadminder.cfm?pid=955

I'm Certifiable, not certified.
It just means my answers are from experience, not a book.