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Exchange User Account Password Issue

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Exchange User Account Password Issue - 1.Feb.2007 2:12:59 PM   


Posts: 1
Joined: 1.Feb.2007
Status: offline
I'm the network administrator for a company that has many co-location servers in it's datacenter. I have one customer inparticular that is currently having an issue with their SBS Exchange server.

The issue is as follows:

About every 4 - 10 days the passwords on random accounts are "locked", By "Locked" meaning an administrative reset of the password has to be performed inorder for this account to be accessed again. Once the password is reset the users can log in fine.

What I've done:

  • I've performed a security audit on the machine to check for Lockout and Password rules that would affect this. None were found and the account lockout attempt threshold is 1000.

  • I've checked to see if the system was losing time to ensure that it was not locking from a time discrepency.

  • I've modified the user accounts stating that passwords never expire and the users cannot change them.

I'm lost on this issue and the customer is starting to complain about the need to reset the passwords so often. Any help on this would be greatly accepted and appreciated. If you need any further information please ask.


Post #: 1
RE: Exchange User Account Password Issue - 1.Feb.2007 2:18:31 PM   


Posts: 8232
Joined: 7.Jan.2004
From: California, USA
Status: offline
One of my co-workers turned me on to a utility that I now use all the time.  It's called Lockout Status.

It will tell you where and when bad password attempts are being registered, and with that information you can search the DC security logs.

Try it and see what it says.  Report back with your findings.



Dean T. Uemura
Microsoft MVP - Exchange (2007-2011)

(in reply to cjones)
Post #: 2
RE: Exchange User Account Password Issue - 2.Feb.2007 6:41:40 PM   


Posts: 44
Joined: 21.Jan.2007
From: Ottawa, Canada
Status: offline
check your default domain policy. mainly
Computer Configuration\Windows Settings\Security Settings\Account Policies\Account Lockout Policy\
check Account lockout duration if it's set to 0, then the account will be locked out until you explicitly unlock it.
Normally set it to 30minutes and you use the lockoutstatus tool mentioned below to monitor for intrustion/user error.


(in reply to uemurad)
Post #: 3

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