From what I remember, running dcpromo on a server with Exchange is bad! I don't know where I heard/read it - but I do remember it! This may also help a bit - http://forums.msexchange.org/m_1800395954/mpage_1/key_/tm.htm ...Spence ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Ara Avvali Sent: 12 April 2006 23:38 To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] remove dc role from exchange Hello everyone, Just to be cleared! There are 3 server and all 3 are domain controllers. PDC,MAIL,BDC. PDc is holding the FSMO rule. If I want to demote exchange box a domain master, all I need to do is running dcpromo ,right? Exchange 2003 running on server 2003. Appreciated J