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Exchange Server Dropping Connection

A

acunje

Junior Member
Hello,

Here in my office we are all a bit puzzled by a problem that some of our users are having. Ever so often a select few of users have their exchange server connection drop at which point the also seem to loose their authentication. It is not happening with everyone, only some users. We have no idea what could be causing this...

The exchange server was also recently moved into the DMZ in the firewall. The DMZ was created in June. People would would drop connections still after this.
We also just moved to exchange 2003 on August 13th. Now people are loosing authenticaion on top of this.

Do you think it is a server issue?
A client issue?

Thanks! All information is much appreciated!!!

~Andrew
 
Are these clients by any chance using Win 98? If so, I have a fix for it.

If not, maybe check IP lease times and see about extending them. Do these users lose network connections or only communication to Exchange?
 
No they are using windows XP.

They only loose connectivity with the exchange server....all other network functions work fine.

~Andrew
 
Hi, do these ?select few of users? happen to be the ?same exact set of users? that keep losing the connectivity with exchange? How often in time is ?every so often?, is it weeks or days or hours? Also, the DMZ should not have effect when the server and all of these clients, (those that do have the issue and those that don?t) are on the LAN side. Do you have clients that get to the exchange server from out in the cloud, passing through the WAN port to the server and they get this problem or they really are all on the lan side? Please clarify as to where these clients getting into their exchange store are located in the network, and if it is the same exact set of users that have the problem every time. Also, how many users are using exchange anyways? Is this problem related to after more people are in and then it starts dropping random users? Do the ?other network functions? go through the server that runs exchange, such as files or software? If affected users were to log into different computers at different locations than where do have been for a while, do they still loose connectivity with exchange?
 
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