XFOR: Internet Mail Service Can Only Send SMTP Type Mail

ID: Q183801

The information in this article applies to:

Microsoft Exchange Server, version 5.5

IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.

SYMPTOMS

The Microsoft Exchange Server Internet Mail Service can only handle SMTP type messages. When the Internet Mail Service is configured to send mail of different type, the message will NDR with the following text in the NDR:


   From: System Administrator
   Sent: Monday, January 05, 1998 8:01 PM
   To: 'user@domain.com'
   Subject: Undeliverable: Test Subject

   Your message did not reach some or all of the intended recipients.

      Subject: Test Subject
      Sent: 1/5/98 7:31 PM

   The following recipient(s) could not be reached:

     `user@domain.com' on 1/5/98 8:01 PM
         Unable to deliver the message due to a communications failure
         MSEXCH:IMS:Microsoft:SITE:SERVER 0 (000D06B5) No proxy for
         Recipient

STATUS

Microsoft has confirmed this to be a problem in Exchange Server version 5.5. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 5.5. For information about obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

MORE INFORMATION

Although it is not common practice to send messages of a different type to the Internet Mail Service, there are certain circumstances where mail of a different type needs to be routed through the Internet Mail Service. However, all mail that is routed via the Internet Mail Service is actually Internet mail, but with a different message type. For example, there is an internal SMTP mail system that you need to send to, but you want to address the mail in the following format:

[SMTPOUT:user@internal.domain.com]

Because the Internet Mail Service can only handle SMTP type messages and not SMTPOUT type messages, you will receive the above NDR after sending the mail.

This functionality will be available in Exchange Server 5.5 Service Pack 1. However, the following registry keys need to be implemented in order for this to work on the computer running the Microsoft Exchange Server Internet Mail Service.

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys and Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it.

All of the values below will be located in the following registry key:


    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIMC
    \Parameters

NOTE: The above registry key is one path; it has been wrapped for readability.

REG_SZ: OverrideProxyOut: This value should contain the outbound address type. In our example, this would be SMTPOUT.

REG_SZ: SiteDomain: This value should contain the local domain name, for example, "imc1.domain.com" or "regulardomain.com".

Also, to route that type of message, the address space on the Internet Mail Service needs the correct type and cost. For the example above, an address space of SMTPOUT is needed.

Additional query words: IMC IMS NDR proxy

Keywords : XFOR
Version : WINDOWS:5.5
Platform : WINDOWS
Issue type : kbbug