Exchange services won't start

We discovered an problem today with our exchange server.  The information store either stopped or crashed and I couldn't mount the mailbox stores.

I rebooted the server and it hung at applying computer settings.  I rebooted again and into safe mode and disabled all exchange services.  I was able to boot finally.  Still cant get any exchange services started especially the system attendant.

Microsoft thinks its a problem with our DC's since some of the error message stae things like cannot pull information from dc.  Very strange.  This strated about 3:00 AM and we haven't installed, updated, or changed anything on our exchanger server.  This is our only exchnage server.
georgedschneiderAsked:
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ZanemwestCommented:
do you still have a global catalogue on the network, or available.
is the name resolution still working ie is the dns ok.
on the domain controllers are the AD services still running.
finally if you are using a service account has the password of the account expired or changed. (my guess)

if it were just the information stores that wont mount i would guess disk space as an issue
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alshahnazCommented:
restart your DC and then try to start ur exchange services,

Thanks,
Shan
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georgedschneiderAuthor Commented:
all three of our global catolog server are running and availble.

name resolution works without an issue.  What service should I check on the DC for AD?

The primary exchange server thats having a problem is the system attendant and they are all set to use localsystem.
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alshahnazCommented:
i recommed u run the Microsoft Exchange Server Best Practices Analyzer Tool on ur exchange server it will point you where the issue is

Thanks,
Shan
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georgedschneiderAuthor Commented:
should I try all of them or just the one's in the same subnet as the exchange server.
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alshahnazCommented:
try rebooting the one in the subnet as the exchange server.
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ZanemwestCommented:
there is an active directory service but if the authentication is ok then that is not it.

check if a service account is being used for exchange services if so make sure that password has not expired or that noone has changed the password
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ZanemwestCommented:
use replmon.exe to make sure that the synchronisation between the DC is fine
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georgedschneiderAuthor Commented:
I beleive the problem was with our Active directory.  We did an authoratative restore of active directory and disjoined and rejoined the exchange server to the domain.  We added the new computer as a member of exchange domain admins.  Started in safe mode and disabled all exchange services.  I then restarted normally.  When the server came up I set the following services and attempted to start them:

Microsoft Exchange Event
Microsoft Exchange Information Store
Microsoft Exchange MTA Stacks
Microsoft Exchange Routing Engine
Microsoft Exchange Stystem Attendant

All of them started without an issue, the only problem was with the Microsoft Exchange Event service which can be a message that the service started and then stoped.  Is this normal?

Also are there any other services that need to be started?
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Computer101Commented:
PAQed with points refunded (500)

Computer101
EE Admin
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