The Outlook Express Client may not be able to send mail to or receive mail from Microsoft Exchange Server 5.0 or 5.5. On Exchange Server, you will see only one warning message:
Event ID: 11103 Description: POP3 connection to 220.127.116.11 lost.
Enabling logging on the Exchange Server computer for the POP3 protocol reveals the following informational message just before the warning.
Event ID: 11300 Description: An unauthenticated POP3 client 18.104.22.168 issued the following command: AUTH .
From Outlook Express version 4.72.2106.4, you see a Connection Failure
dialog box. If you click Details
, you will find the following information:
* Unable to logon to the server using Distributed Password Authentication. Account'Work POP3 Server', Server:'Server.Domain.com',Protocol: POP3,Server Response:'.',Port: 110, Secure(SSL):No, Error Number: 0x800CCC18