Exchange 2003 won't start unless Backup DC is up and running


Win2003 DC
Exchange 2003 Member Server

Win2008R2 DC introduced so that :

Win2008R2 DC raised to Primary Domain Controller, Global Catalog - all 5 FSMO roles transferred to it
Old Win2003 DC retained as Win2003 Backup Domain Controller
Exchange 2003 Member Server

If the Win2003 Backup DC is turned off and the Exchange 2003 Member Server is restarted, the System Attendant does not start, and therefore the MTA Stacks and the Store do not start either.  As soon as the Win2003 Backup DC (which used to be the Primary DC) is turned back on, then Exchange 2003 will start.

In Exchange System Manager 2003, looking at the  Directory Access  tab shows that both the Win2008R2 PDC and the Win2003 BDC are seen in all categories.

What am I missing ?

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Neil RussellTechnical Development LeadCommented:
There has been nos such thing as a primary or backup domain co triller since Windows NT 4.
Your issue is with a setting in exchange telling it what DC to use OR with DNS configure on your exchange server.
I will post the settings to check in a sec after dinner has gone down.
Pete LongTechnical ConsultantCommented:
In exchange 2003 look for recipient update Service (RUS) open its properties, and change the domain controller it looks at.

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ATWMICHELAuthor Commented:
Hi Pete,

Much Thanks.  That definitely looks to be it (having connected remotely just now to look at it).

Will go on-site tomorrow evening to re-do the test after changing this setting and will report back.

ATWMICHELAuthor Commented:
Thanks - that was the issue.

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Windows Server 2003

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