XFOR: Internet Mail Connector Dial-Up Connection Stops Working

The Internet Mail Connector on an Exchange 5.5 server is initially configured to forward all mail to a Simple Mail Transfer Protocol (SMTP) host over a dial-up connection. This works fine and all SMTP mail is successfully sent using the Remote Access Service (RAS) link to the remote host.

However, problems may occur if an additional entry is created using the Email Domain button on the Connections tab of the Microsoft Internet Mail Service. If that connection is set to use Domain Name Service (DNS) or forwards all messages directly to a host using a local area network (LAN) link instead of RAS, the dial-up connection specified on the Connections tab never dials again.

To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base: The English version of this fix should have the following file attributes or later:

Component: Internet Mail Service

Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3.