XFOR: Internet Mail Service Failed to Deliver Message, Error 4117

The Internet Mail Service may fail to deliver inbound Internet messages if the Character Sets setting is improperly configured. An Event Log entry similar to the following appears in the Windows NT application log: The spool file name may vary from computer to computer.

The Character Sets setting on Internet Mail Service is improperly configured. This usually happens if the default Character Sets setting was changed.

The setting is on the Internet Mail tab of Internet Mail Service Properties page. The default setting for either MIME or Non-MIME is "Western European (ISO-8859-1)."

This can also occur if antivirus software that is not "Exchange aware" is running on the system. Use of antivirus software that is not "Exchange aware" is highly discouraged.

To resolve this problem, you need to reconfigure the Character Sets setting using the following procedure:

1. Check the 4117 event, locate the spool file name ("Jtmrmaqv" in the above example).
2. Open this file under Exchsrvr\Imcdata\In\Archive with Notepad.exe.
3. The majority of this file is in plain text format. It contains the header and body of the inbound message to be delivered. The character set of the message is included in lines similar to:
   Content-Type: text/plain;
   charset="ISO-8859-1"
4. Open the Exchange Server Administrator program, and open the properties for the Internet Mail Service.
5. On the Internet Mail tab, reset the character sets to correspond with the character set name you find in step 3. (If this problem only happens to certain domains, you may prefer per-domain setting by clicking the E-Mail Domain button.)
6. Stop and restart Internet Mail Service.

To test the new setting:

1. Stop the Internet Mail Service.
2. Move files under Exchsrvr\Imcdata\In\Archive to Exchsrvr\Imcdata\In.
3. Restart the Internet Mail Service.

Messages are delivered to corresponding mailboxes and no event 4117 appears in the application log.