secondary domain controller not working right

I have 2 domain controllers in my network one is the primary the other one is the secondary. the primary DC went down and we started having problems with exchange mounting 2 of the 4 stores that were down. The other 2 mounted fine.
What is weird is after the primary DC was rebooted all the stores mounted fine after. I have run netdiag and dc diag on both DCs and no errors. I am contemplating reinstalling the secondary DC and starting all over but before i do that i wanted to make sure that this is something wrong with secondary DC.

Any ideas?
i am running w2k3 standard edition, sp2.
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is replication correct?
is the secondary...basically the second DC setup as a global catalog server as well, and does it have DNS setup on it.  For a secondary DC to work properly you should have it setup as a global catalog and ensure DNS is setup on it as well and actually as a secondary to the other DC's DNS.

If you don't here is a link to have the secondary DNS  And to ensure your other DC is a global cat

Also, make sure you exchange server has both of the DNS's IP address.  Primary will be your "first" DC and the secondary will be the second "DC".

Hope this helps.

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cchibongaAuthor Commented:
i followed your instructions and noticed that the secondary DNS had not been selected as a global catalog. I guess that is the problem?
What do you think? can we have more than one global catalog in network?
Very important to have more then one global cataglog, if you don't you really don't have a true AD backup.

Hope this helped.
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Windows Server 2003

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