Exchange 2000 stopped working after one of DC crashed(HD crash)

I have 2 DCs one is dns and dhcp server other exchange server... The dns server went down (hard drive crash) now exchange server is not working. OSA is not working also. I have started functions of dns and dhcp to exchange server. I would like to drop DNS server altogether and Keep only one server. what do I need to do to get the exchange up and running?


I do not wish to rebuild the crashed DC. and Exchange 2000 server is second DC for this domain and only(now).
This is the error messages I am getting in the event viewer (Exchange server) :
Could not open LDAP session to directory of (crashed DC .com) using local service credentials. Cannot access address list configuration information. Make sure (crashed DC) is running.
I cannot start Exchange Iformation store and MTA stack because of time out. and the system attendant service showing starting but never change to started (hung?) I cannot restart or stop the service.

any suggestions?
dbuentingAsked:
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dstoker509Connect With a Mentor Commented:
Your second DC is not a Global Catalog Server.  Exchange requires a GC to function.

To make it a GC, go to Sites and Sevices, select your server, right-click NTDS Settings, enter Properties.  Depending upon your FSMO roles, you may need to force claim some roles if the crashed server is dead.  However, once you force FSMO role changes, do not bring the crashed DC back.  Format, rebuild, just don't bring it back up!

Read: http://www.microsoft.com/resources/documentation/IIS/6/all/proddocs/en-us/Default.asp?url=/resources/documentation/IIS/6/all/proddocs/en-us/sag_ADrespondFSMOfailures.asp 

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