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Problemed solved. I found an article that recommened to change the LDAP port from 389 to 390 and that did the trick for me. &nbsp;Thanks for the help.
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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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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. &nbsp;I checked the DNS and that doesnt seem to be an issue. &nbsp;I'm wondering if I need to upgrade the Exchange 5.5 server to Windows Server SP4. &nbsp;Any info will help. &nbsp;Thanks<br />
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Chris
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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

ADC can't connect to Exchange 5.5 Server

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.