Microsoft KB Archive/184463

= XFOR: Cannot Connect to Server with POP3 Client =

Article ID: 184463

Article Last Modified on 2/27/2007

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APPLIES TO


 * Microsoft Exchange 2000 Server Standard Edition
 * Microsoft Exchange Server 5.0 Standard Edition
 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q184463



SYMPTOMS
You may be unable to connect to a computer running Microsoft Exchange Server with a Post Office Protocol version 3 (POP3) or Internet Messaging Access Protocol 4 (IMAP) e-mail client. No error messages are displayed.



CAUSE
This problem can occur when your Microsoft Exchange Server mailbox name is different from your Windows NT user name and you do not specify both names in the properties for the Microsoft Exchange Server information service. If you do not specify both names, the Microsoft Exchange Server computer may be unable to authenticate your user account and password.



WORKAROUND
To resolve this problem, specify your Windows NT domain, Windows NT user name, and Microsoft Exchange Server mailbox name in the properties for the Microsoft Exchange Server information service. To do so, follow these steps:  On the Tools menu in your e-mail client, click Services. Click Microsoft Exchange Server in the list of information services, and then click Properties. In the Mailbox box, type

\ \

where  is your Windows NT domain,   is your Windows NT user name, and   is your Microsoft Exchange Server mailbox name. For example, type:

Domain1\User1\Mailbox1

 Click OK, and then click OK again.



MORE INFORMATION
If you specify your mailbox name in the properties for the Microsoft Exchange Server information service, but do not specify your domain and user name, the computer running Microsoft Exchange Server assumes that your user name is the same as your mailbox name. If it is not, the server is unable to locate your user account.

If you specify the domain and user name, but do not specify the mailbox name, the server assumes that your mailbox name is the same as your user name. If it is not, the server is unable to locate your mailbox.

Keywords: kbprb KB184463

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