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Adding a new excepted domain in Exchange 2007 SP1

gogetsome asked
Last Modified: 2012-05-06
 I have an Exchange 2007 SP1 single server that has been running fine for a year now. I am trying to add a new accepted domain and cannot get it to work externally. I do not have an MS Edge server, but do have a Barracuda Spam Firewall 300 configured as a smart host for exchange. I have 2 domains today that the Exchange server accepts mail for, that work fine. I defined a new 3 rd Accepted Domain in exchange and from within the exchange server it appears to be working correctly. The new domain is also configured in the Barracuda.  I cannot get the exchange server to accept connections from outside of the exchange server for this new domain.  
  I have had the Barracuda engineers look at the configuration for both the working and non working domains and they cannot find a difference between them and they do not see a configuration problem with the Barracuda.  
  I cannot see any differences in the configuration between the Accepted Domains between the ones that work and the one that doesnt. I do not see anything in the receive connector that is related to a domain, so I dont think the problem is there either. The send connectors also do not seem to have any configuration information specific to domains either.
  The original Domains were installed with Exchange 2007 RTM. When SP1 became available I installed it, So the new domain was created under SP1 while the old domains were created with RTM installed.

Does anyone have any idea where to look next? Thanks in advance for any advice!
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