[ExchangeList] Re: DSAccess Topology Discovery Fails.

  • From: "Michael B. Smith" <michael@xxxxxxxxxxxxxxxxxxxxxxxx>
  • To: <exchangelist@xxxxxxxxxxxxx>
  • Date: Wed, 2 Jan 2008 11:07:41 -0500

Can you "telnet <ds-server> 389" ?? That is, is access to the port actually


If so, this isn't an Exchange issue per se - the Exchange problem is just a
symptom of a larger problem.




Michael B. Smith

MCSE/Exchange MVP



From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Mahadevan
Sent: Wednesday, January 02, 2008 11:00 AM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] DSAccess Topology Discovery Fails.



Hello All,


Windows 2003 AD With Native Mode

Exchange 2003 SP2 with Native Mode


We have vague issue in DSAccess Topology discovry only in one particular
Front End Exchange server which we use it as Mobility Server.Every week the
topology discovery will fail with 2110, 2115, 2114, 2095, 2102, 2103......
events. The main error is " Process MAD.EXE (PID=1908). Could not bind to DS
server XXXXXXXX Error 5a in Port 389". There is no use in running any tests
like netdiag, nltest, policy test during this time because it is not able to
communicate with port 389. The only temporary slution which we have is
Reboot the Exchange server after which it will work fine for another week. 


Did the following things..


Increased Diagnostic Logging for DSAccess and hence got the above mentioned

Ran ExBPA and found nothing fishy, except 3GB switch enabled in the Front
End Server which is not there in any other FE servers.

Memory usage is normal.


We are planning to take this up with Microsoft but before that just thought
of getting any of your suggestions if any one has faced this issue.

Regards... Mahadevan


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