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Q280096: XCCC: Unable to Connect to Exchange Server By Using POP3

Article: Q280096
Product(s): Microsoft Exchange
Version(s): 5.5
Operating System(s): 
Keyword(s): kb3rdparty
Last Modified: 01-JUN-2001

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The information in this article applies to:

- Microsoft Exchange Server, version 5.5 
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SYMPTOMS
========

When you try to connect to Exchange Server by using Post Office Protocol 3
(POP3), you may be prompted for logon credentials numerous times, and you may
not be able to log on successfully.

CAUSE
=====

This issue can occur if you have installed the Norton Anti-Virus 2000 program on
the computer and the Popproxy.exe service is running.

RESOLUTION
==========

To resolve this issue, disable or remove Popproxy.exe.

MORE INFORMATION
================

If you connect to port 110 by using telnet, you receive the following banner:

  18:33:22 POP3: 18:33:23 [rx] +OK POP3 server ready

  POP3: 18:33:23 [tx]

However, this banner is not the Exchange Server POP3 banner.

Additional query words:

======================================================================
Keywords          : kb3rdparty 
Component         : POP3
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : :5.5
Issue type        : kbprb

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