<div>
Do you have exchange server in it?? Try to ping your AD server. If it is working fine check your GC is synchronizing with exchange. Use LDP.exe at command promt put AD (GC) server name.<br />
<br />
If all are working fine try to restart system attendant service you will get your resolution event id 2081
</div>


Do you have exchange server in it?? Try to ping your AD server. If it is working fine check your GC is synchronizing with exchange. Use LDP.exe at command promt put AD (GC) server name.

If all are working fine try to restart system attendant service you will get your resolution event id 2081

<div>
As suggested above first check your DC/GC working fine.<br />
<br />
How many DCs you have?<br />
<br />
run 'setup.com /prepareAD' from exch. server and see what are the errors
</div>


As suggested above first check your DC/GC working fine.

How many DCs you have?

run 'setup.com /prepareAD' from exch. server and see what are the errors

<div>
<div class="content wysiwyg-content">
Looking solution for below <br />
<br />
Event Type: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Error<br />
Event Source: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MSExchange ADAccess<br />
Event Category: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Topology <br />
Event ID: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2102<br />
Date: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15/09/2012<br />
Time: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12:26:14 PM<br />
User: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A<br />
Computer: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BQUALSMX01<br />
Description:<br />
Process MAD.EXE (PID=4476). All Domain Controller Servers in use are not responding: <br />
bqualsdc01.bigfootgrp.corp<wbr />.local <br />
&nbsp; <br />
<br />
For more information, see Help and Support Center at <a href="http://go.microsoft.com/fwlink/events.asp" rel="ugc">http://go.microsoft.com/fwlink/events.asp</a>.
</div>
</div>


Looking solution for below 

Event Type:	Error
Event Source:	MSExchange ADAccess
Event Category:	Topology 
Event ID:	2102
Date:		15/09/2012
Time:		12:26:14 PM
User:		N/A
Computer:	BQUALSMX01
Description:
Process MAD.EXE (PID=4476). All Domain Controller Servers in use are not responding: 
bqualsdc01.bigfootgrp.corp.local 
  

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

MSExchange ADAccess - Exchange 2007

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