Exchange 2003 can not replicate with PDC

I running windows server 2000 as an pdc and  running  exchange 2003. Somehow, exchange is not replicate with the pdc any more. Email works fine but it's not connect to any operation master. On EID: it has an error. Please help!
bengxiongAsked:
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MesthaCommented:
Exchange doesn't "replicate" anything. It does a live lookup.
Furthermore there is no such thing as a PDC in AD. There is a PDC emulator, but that is all. AD would actually operate for a time without it.

What is EID?

Do you have more than one domain controller?
What has changed?
Have the domain controller/s been rebooted? The Exchange server?

Simon.
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bengxiongAuthor Commented:
I was forced to close.
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