Solved

User cannot use POP3 to get email on Exchange 2007

Posted on 2010-11-19
20
1,228 Views
Last Modified: 2012-06-27
I have a Windows 2008 SBS running Exchange Server.  We have some users that need to use POP3 to access their inboxes.  All users except for one can do this.  The one user keeps getting rejected for invalid login credentials.  The login name is only 3 characters so it is not the long UPN issue.

Username and password works for OWA login and remote desktop login and the account can be connected to otherwise but not POP3.

Security audit log shows Success for the login when an attempt is made to connect yet Exchange still returns incorrect username/password.

Thanks in advance for your help.
0
Comment
Question by:YMartin
  • 10
  • 9
20 Comments
 
LVL 6

Expert Comment

by:Kris Montgomery
ID: 34174569
The first thing to check is his computer time/date and time zone.  

Sorry for the lack of detail.

Thanks!

mug
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 34175003
Use the users email address as the username
0
 
LVL 1

Author Comment

by:YMartin
ID: 34175831
Thanks muganthony and MegaNuk3.  

The computer time zone is fine as I can connect to one account from the computer using Outllook and POP3 without any trouble but not the other.  It is something with that user's account

MegaNuk3 - I tried using the email address as the username too and that doesn't work.
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 34179239
enter logon credentials as DomainName\LogonName\MailboxAlias

 

OR

 

set mailbox Alias to be the same as the account name
0
 
LVL 1

Author Comment

by:YMartin
ID: 34189053
Here is the other kicker.  I just confirmed with the user that It used to work until about 2 weeks ago and suddenly stopped working.  The user says they didn't change anything.

I have confirmed from my test system that the login doesn't work anymore so it is not something with the user's computer.  I have tried resetting the password to no effect.

Seems like Exchange is trying to do some other authentication via the POP3.  Again the login works for OWA.
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 34189401
Did you try my suggestion of putting
Domain\UserName\MailboxAlias
In the username box of the POP settings?
0
 
LVL 1

Author Comment

by:YMartin
ID: 34196725
Yes - I tried the Domain\UserName\MailboxAlias and that doesn't work either.  The user was able to login just via POP3 fine for about 10 months and then it stopped working.
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 34201416
And pop access isn't disabled on the user account?
0
 
LVL 1

Author Comment

by:YMartin
ID: 34233728
Correct - POP access is not disabled.
0
 
LVL 31

Assisted Solution

by:MegaNuk3
MegaNuk3 earned 500 total points
ID: 34245963
Is the exchange server logging any application events for this POP user? You may need to increase diagnostic logging on POP to get anything useful
0
Does Powershell have you tied up in knots?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

 
LVL 1

Author Comment

by:YMartin
ID: 34257217
Can you point me in the right direction on how to increase the logging for POP to get the right diagnostic info?

Thanks
0
 
LVL 31

Assisted Solution

by:MegaNuk3
MegaNuk3 earned 500 total points
ID: 34257377
EMC-->Server Config-->Client Access--> Right click on your server in the right pane (where the POP clients connect) --> Manage Diagnostic Logging Properties--> MS Exchange POP3-->General-->Medium

If that doesn't log anything about your failing user then try Expert level, but keep an eye on the event logs as this can log too much...
0
 
LVL 1

Author Comment

by:YMartin
ID: 34267703
OK the  POP3\General logging is set to High.  Where can I see the log?  I looked in Program Files -> Microsoft -> Exchange Server -> Logging but there was nothing there for POP3.

BTW - We are using Small Business Server 2008.

Thanks,
0
 
LVL 31

Assisted Solution

by:MegaNuk3
MegaNuk3 earned 500 total points
ID: 34268375
Should see pop events in your application event log
0
 
LVL 31

Assisted Solution

by:MegaNuk3
MegaNuk3 earned 500 total points
ID: 34268514
Start-->run-->eventvwr-->windows logs-->application
0
 
LVL 1

Author Comment

by:YMartin
ID: 34305951
Ok got something in the event log that may be a clue:
Event Type: Warning
Event Source: MSExchangePOP3
Event ID: 1009
Description: Number of simultaneous connections made by user <xxx> exceeded maximum (16).

The solution is described here: http://support.microsoft.com/kb/968626
I am going to do that but it doesn't really make sense since the user's mailbox is not shared and it was working for almost a year without this issue.
0
 
LVL 31

Accepted Solution

by:
MegaNuk3 earned 500 total points
ID: 34306084
Install SP3 for Exchange 2007
0
 
LVL 1

Author Comment

by:YMartin
ID: 34364924
Intsalled SP3 which went off without a hitch and that fixed the issue.  Thanks MegaNuk3!
0
 
LVL 1

Author Closing Comment

by:YMartin
ID: 34364967
I accepted my own comment because it contains the link to the Microsoft knowledge base article I found that gave the solution.  I wouldn't have found that without MegaNuk3 helping me with setting up the POP3 logs.  Also MegaNuk3 suggested upgrading to Exchange Server SP3 whereas the Microsoft knowledge base article just had me doing an SP1 roll up update.
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 34364996
Thanks for the points, glad you got it solved.
0

Featured Post

Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

We are happy to announce a brand new addition to our line of acclaimed email signature management products – CodeTwo Email Signatures for Office 365.
Read this checklist to learn more about the 15 things you should never include in an email signature.
In this video we show how to create an email address policy in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Mail Flow…
To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now