Mail messages to users on another Exchange server are stuck in a SMTP queue

Author: Leif Pedersen MVP

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SYMPTOMS

After installation a second Exchange 2000 server into an existing one server Exchange organization there is no mail messages flow from the first server to the new server. Mails are stuck in a SMTP queue for the domain

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CAUSE

This happens because there is a smart-host configured on the SMTP virtual server on the first server. This tells Exchange that all emails should be sent to the smart-host (and in return the smart-host knows that all emails destined for the domain should be sent to the first server). This effectively blocks the first server users from emailing users on the second server.

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RESOLUTION

Create a SMTP connector on one of the Exchange servers and move the smart-host configuration to this connector. Configuring this will assure that only emails destined for foreign domains will be sent to the smart-host and that emails destined for local users will go directly to the server hosting the user mailboxes.

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APPLIES TO

Microsoft Exchange 2000 Server Standard Edition
Microsoft Exchange 2000 Enterprise Server
Microsoft Exchange Server 2003 Standard Edition
Microsoft Exchange Server 2003 Enterprise Edition

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kbpubmvp kbpubtypecca kbhowto KB555366

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