Today, there is a question of a friend. This is also an old problem. 1. Problem Description is: When you use Microsoft Outlook or Microsoft Outlook Express to retrieve POP3 mail, you may receive a timeout error and cannot be from Exchange Retrieve any emails on the server.
2. Solution: Add a DWORD value to the EXCHANGE server:
Click Start, click Run, type "RegedT32, and then click OK. Click the following: HKEY_LOCAL_MACHINE / SYSTEM / CURRENTCONTROLSET / SERVICES / POP3SVC / Parameters On the Edit menu, click Add Value" In the "Name box" box, type checkpop3tail. In the Data Type box, click REG_DWORD, then click OK. In the "Data" box, type 1, and then click OK. Exit Registration Table editor.
From: http://support.microsoft.com/default.aspx? ScID = KB; zH-CN; 816833
