DCPROMO on an Exchange 2003 server

I need to run a dcpromo on my echange server but i need to know how to handle my mailboxs?

I have 2 Windows Server 2003 servers with Exchange 2003 running on one.  I have 30 mailbox's and users.  I need to run a dcpromo on the exchange server to take it out of the domain then re-run the dcpromo again to add it to the domain again.

I need to do this to fix a MSADC 8018 that happens every five minutes. But i don't want to reck my mailboxs.

thanks in advance
JCSUKAsked:
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SembeeCommented:
DCPROMO and the AD Connector are totally unrelated.

DCPROMO makes a new domain controller out of a Windows 200x server. It makes significant changes to the way the server is secured and this can upset Exchange which is why it isn't supported.

The ADC allows an Exchange 5.5 server to talk to a Windows 200x AD domain.
Removing the ADC will not affect your domain in any way.

Simon.
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SembeeCommented:
Changing the role of the Exchange server from a DC to a member server (or vice-versa) is not supported and likely to cause problems with the Exchange installation. Worse case you will need to reinstall Exchange.

The problem you are trying to fix - what is it and where did you get the information about DCPROMO out and then back in as being the resolution?

Simon.
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JCSUKAuthor Commented:
I was advised to run the dcpromo by another expert from experts exchange.  The fault has been happening for a couple of months.  When i first installed exchange on the server IIS wasn't installed and as a result we couldn't use OWA unless i completeley removed exchange and reinstalled.  I setup a 3rd server with windows server 2003 and exchange 2003 then moved all mailboxes onto it.  Then i removed and reinstalled exchange on my first exchange server and moved the mailboxes back.  

This went quite well but as a result i have a re-occuring error 8108 MSADC every five minutes exactly and the delivery of local mail is slow compared to before when it was instant.

Thanks
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SembeeCommented:
Have you got a link to that question where you got that advice? It is incorrect for the reason I have given above.

However the error you are getting is being generated by the Active Directory Connector. Unless you have an Exchange 5.5 server in your domain then you don't need it. Remove the connector using Add/Remove Programs. It is just to allow an Exchange 5.5 server to talk to a Windows 200x domain.

Simon.
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JCSUKAuthor Commented:
So the Exchange server will remain a dc after i have uninstalled the connector?  

So whats the difference from running a dcpromo to uninstalling the connector.

Sorry I am a pretty new to this environment as you can tell.

I will try this at the weekend thanks for the help.
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