Event ID 9385

Suddenly you may notice 9385 error logs flodding in your exchange server. The below is the log:

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Log Name:      Application
Source:        MSExchangeSA
Date:          9/14/2012 2:13:29 PM
Event ID:      9385
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      xyz.abc.com
Description:
Microsoft Exchange System Attendant failed to read the membership of the universal security group '/dc=com/dc=abc/ou=Microsoft Exchange Security Groups/cn=Exchange Servers'; the error code was '8007203a'. The problem might be that the Microsoft Exchange System Attendant does not have permission to read the membership of the group.

If this computer is not a member of the group '/dc=com/dc=abc/ou=Microsoft Exchange Security Groups/cn=Exchange Servers', you should manually stop all Microsoft Exchange services, run the task 'add-ExchangeServerGroupMember,' and then restart all Microsoft Exchange services.
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This may be due to various factors:
1) Verify the server is part of  the Exchange Servers security group.
2)  Even the server is part of the group but services are not started.
3) If the server has been moved to different OU in Active Directory.

To fix the issue:

Please add the server to Exchange Servers security group and restart all the exchange services. If the server is already a part of the group , restart the system attendant service and check if the errors are stopped.
If the issue persists, then restart the server.

If the issue is still persisting, then it could be due to the server has been moved to different OU. Moving back the server will fix this issue.

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