We have a strange problem that has developed following a migration to small business server 2008. Appreciate the team's help on this.
A migration from SBS 2003 to SBS 2008 was done several months ago. THe domain did migrate initially and all seemed fine. THe SBS2003 server was demoted and removed, and is no olonger available.
What we have noticed is that, about eveyr 2-4 weeks, the SBS Exchange Server goes offline. Even though the MS Exchange serviecs all show as started, when going to the Exchange Server Console, it gives error message..."An Active Directory error 0x8007203A occurred while searching for domain controller....The server is not operational". Then I noticed in the system logs numerous inabilities of GP to update. In trying to force GP to update, get the error message of "the processing of Group Policy failed...". It is almost as if the sevrer has lost the knowledgee that this is in fact the DC itself. All shares continue to work, and TS works. Again, it seems to happen every two to four weeks or so. Last, when restarting the server, all is well.