Unexpected DOH error

Hello,
I've been wracking my head over this one all day and can't seem to
resolve the issue. My Cisco Unity server was working about a week or 2
ago. I am not sure if anything was changed on the unity/Exchange/AD
server as I am not the primary network admin for this network.
Basically the problem is the Unity will not start. When I launch it
from the start bar or try to start the AVcsMGR service I get hit with
about 5 error messages from the DOH and MALex. It says that there was
a problem with the MAPI subsystem. I am including the exact output
below. I have run through Cisco's steps to resolve MAPI issues twice
but I am still not getting anywhere with the system. In addition to
the app log output, I am including some info form the syscheck utility

Event Type: Error
Event Source: CiscoUnity_MALEx
Event Category: Error
Event ID: 30003
Date: 9/25/2007
Time: 3:05:42 PM
User: N/A
Computer: <UNITY SERVER omitted>
Description:
An attempt to access the Primary Exchange Mailbox Store by AvCsMgr via
MAPI has failed. The MAPI subsystem return the following error: You
do not have permission to log on..

Failure Doh Trying to find the Doh. Unexpected Error Occured in e:
\Views\cs_CU4.0.4.221\un_Doh2\SysCheck\DohTests\GetTheDoh.cpp, line:
45, hr = : HRESULT 0x80004005 Contact Technical Support.




Thanks in advance,
Jon

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