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ADC can't connect to Exchange 5.5 Server

I currently have a Windows 2000 Server SP4 Domain controller, Windows 2000 Server SP1 with Exchange 5.5 SP4, and a Windows 2000 Server SP4 with Exchange 2003. I am trying to connect the ADC on the Exchange 2003 server to my Exchange 5.5 server but I keep getting an error that says NT3(Exchange 5.5 server) is not an exchange server or SRS service.  I checked the DNS and that doesnt seem to be an issue.  I'm wondering if I need to upgrade the Exchange 5.5 server to Windows Server SP4.  Any info will help.  Thanks

Chris
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wfmb
Asked:
wfmb
1 Solution
 
mass2612Commented:
Check that the Site Replication server is running on the 2003 box by default its disabled. Ensure that the Confg_CA connection agreement is pointing to the correct Exchange server and DC. Also check the LDAP port number is correctly set.

This article may help also - http://www.msexchange.org/tutorials/Exchange_2003_Active_Directory_Connector.html
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wfmbAuthor Commented:
Problemed solved. I found an article that recommened to change the LDAP port from 389 to 390 and that did the trick for me.  Thanks for the help.
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