Does Exchange Server 2007 need to be a Domain Controller?

Hi, I am installing an Exchange Server 2007 and can't remember if it requires to be a Domain Controller or not.  I know Exchange Server 2003 was best not to be, but cannot recall about 2007.

Thanks for your time.

rsnellmanIT ManagerAsked:
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MesthaConnect With a Mentor Commented:
Best practise is always to put Exchange 200x on to a member server, has been since Exchange 2000 was released and has never changed.
Running DCPROMO on a server with Exchange installed is not supported, so the state it was in when Exchange was installed is the state it must stay in.
There are also other technical complications when Exchange is installed on a domain controller, around how all Exchange servers in the org talk to domain controllers.

No it does not have to be a DC.
rsnellmanIT ManagerAuthor Commented:
So, I can essentially set it up similar way I did my Exchange Server 2003?

Make it a member server.

What is best practice?  To make it a DC or not a DC?
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MattiasNConnect With a Mentor Commented:
Small company, I would recommend using a Small business server running as a DC and exchange server, if you are in charge of a bigger company, best practice is to install the exchange servers separetly.
rsnellmanIT ManagerAuthor Commented:
I have about 30 servers.  Some DC's and some just member servers.  Our current Exchange 2003 server is just a member server.  So, I guess I should go with a member server for the new Exchange 2007 server.

abhaighConnect With a Mentor Commented:
best practice is to never install Exchange on a DC

however sometimes you just don't have a choice in the matter
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