Have I destroyed the Exchange 2003 active directory and can it be repaired

Hi all.

Now, no sniggering at the back ok?

Over the course of the last few days, we have replaced our very old
domain controllers (W2k) and replaced them with a nice new shiney W2k3
server. All seems to have gone very well, until this morning.

When I got into the office today, the whole network seemed to be down,
no one could log on or access any of the network shares. Luckily I knew
what the cause was and rectified this straight away (Tried to setup vpn
server and dhcp on the domain controller last night, as well as giving
the PDC a second gateway.) I uninstalled the VPN and DHCP roles from
the PDC and set the gateway back to our main gateway - the one all the
other servers use!

Voila! The network was back up, except for the Exchange server?

I've had a look at the network settings for the Exchange server by
starting in safe mode with networking and all seems to be well (Correct
IP and gateway etc) but when I looked at the Exchange System Manager, I
cant see the Active directory because Im in safe mode and have a
feeling this may be what is broken. The reason I say this is this...

Once the newPDC was up and I have demoted our old domain controllers I
had a look at Exchange to make sure everything was ok. It wasn't. In
the recipient policies the domain controller was still set to our OLD
pdc. I changed these entires and left it at that.

What is the best way to find out whats going on? If I boot the Exchange
box normally, it just sits there forever with the 'Applying computer
settings' dialog box and it doesn't even get to the network login
dialog, but if I go in in safe mode, I can't see the directoy (there
isn't even an option for it in the Adminstrative tools menu)

ANY assistance with this would be most appreciated.

Karl

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