XWEB: POP3 Clients Not Authenticated by Exchange Server (165738)
The information in this article applies to:
- Microsoft Exchange Server 5.0
- Microsoft Exchange Server 5.5
- Microsoft Outlook Web Access 5.5
This article was previously published under Q165738 SYMPTOMS
This problem occurs when you are using Microsoft Windows 95 and Microsoft
Internet Explorer. When you start the Internet Explorer Internet Mail
client, the Internet Mail inbox appears. When you click the Send and
Receive icon, the authentication dialog box appears and requests your logon
information. When you type the requested information, you are not logged on
to Microsoft Exchange Server. However, you can telnet into port 110 of the
Exchange Server and the following message appears:
+OK Welcome to NT Example POP3 server.
RESOLUTION
To resolve this problem:
- On the computer running Microsoft Exchange Server, ensure that the
following services are not started in the Control Panel Services tool:
- POP3 Server services
- Local Mail Delivery Agent service
- SMTP Server services
If the above services are started, stop the services, set the services
to manual, and then restart the server.
MORE INFORMATION
The above services are included with the Windows NT Server 4.0 Resource
Kit as Mail Server (MailSrv) and are not part of Microsoft Exchange Server
version 5.0 or later. For more information on MailSrv, please refer to the
"Windows NT Server Internet Guide" Chapter 7 Internet Tools pages 147-154
included with the Windows NT Server 4.0 Resource Kit.
The POP3 Server Services service will claim port 110 on boot up if the
service is set to automatically initialize. This in turn will not allow
the Microsoft Exchange server to listen to port 110.
| Modification Type: | Minor | Last Reviewed: | 4/28/2005 |
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| Keywords: | kbusage KB165738 |
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