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Jayaramks
0 pts.
 POP3 Access for AD users
DataCenter, Networking
Hi All I am using win 2000 server with AD and win 2000 exchange server. I want to give pop3 access for all my users. POP3 server is enabled in the Exchange server. Strangely some get the access and some do not get it. All users use the roaming profile. I could not find any diffrence in user settings. The user name and password box pops up when they are trying to get the mails thru pop3 access. What could be the problem. Cheers.

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ASKED: January 11, 2005  5:23 AM
UPDATED: January 12, 2005  11:11 AM
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Answer Wiki:
Would you please be a bit more specific when you say "gets the access"? Do you mean that the user name / password combination is refused? Do you mean that some of the users are never prompted? Also - POP3 is a plaintext protocol - try sniffing some test cases (successful and unsuccessful) and see if you can see any difference. Try also looking in the security logs. Hard to help without more specific information. Bob
Last Wiki Answer Submitted:  January 11, 2005  11:35 am  by  Bobkberg   1,070 pts.
All Answer Wiki Contributors:  Bobkberg   1,070 pts.
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Would you please be a bit more specific when you say “gets the access”?

Do you mean that the user name / password combination is refused?

Do you mean that some of the users are never prompted?

Also – POP3 is a plaintext protocol – try sniffing some test cases (successful and unsuccessful) and see if you can see any difference.

Try also looking in the security logs.

Hard to help without more specific information.

Bob

Bobkberg
 1,070 pts.
 

I agree with erlier respondends, but you should check which security policy that is active for the server you’re running Exchange on. Since pop3 is cleartext authentication, you’ll have to allow for cleartext authentication. Your server might be set in native 2000 mode or the security policy requires NTLM authentication, which rules out users that doesn’t log on correctly to the AD.

JuhaTa
 0 pts.
 

HI ALL

My problem is solved. My server is in the mixed mode and allows the cleartext authentication. I have used the Sniffer as rightly pointed by Bob and could understand the problem.
1. When we use the POP3 access fro the users we need to check the Alias name for the user in the exchange. If the alias name and user name are both same then there is no problem. That was the case for the successful pop3 access for some users.
2. For others it was not the cas. Their alias name and user names were different. When I gave the UPN as their user name the POP3 access was successful.
3. Ot is better to check this before for POP3 and IMAP4 access.

>telenet excahnge server 110
>user UPN logon ( User Principal Name )
>pass password

once this test is thru , there will be no problems.

Thanks Bob a ton.

Cheers.

Jayaramks
 0 pts.
 

Sounds like a “rights” issue. Check which groups in the AD work and which ones don’t.

Larrythethird
 0 pts.