Knowledge Base

XIMS: "Relay Not Allowed" After Installing Exchange Server 5.5 SP1

Article ID: 206968

Article Last Modified on 10/28/2006

Microsoft Exchange Server 5.5 Standard Edition

This article was previously published under Q206968

SYMPTOMS

After changing from the Reroute incoming SMTP mail option to the Do not reroute SMTP mail option on the Routing tab of the Microsoft Exchange Internet Mail Service, you may receive a "Relay Not Allowed" non-delivery report (NDR) message.

CAUSE

The following registry key shows that the RelayFlags setting may be set to a value of 2 or higher:

HKEY_LOCAL_MACHINE\System\CCS\Services\MSExchangeIMC\Parameters

RESOLUTION

Set the RelayFlags registry entry to 0, 1 or delete the entry altogether.

-or-
Install Service Pack 1 (SP1), and configure the routing restrictions on the Routing tab of the Microsoft Exchange Internet Mail Service.

STATUS

Microsoft has confirmed that this is a problem in Microsoft Exchange Server 5.5.

MORE INFORMATION

For additional information, please see the following article in the Microsoft Knowledge Base:

179289 XFOR: Internet Mail Service May Not Start When Multiple Entries Are Used and RelayFlags

Keywords: kbbug kberrmsg kbnofix KB206968