Summary:
IME can be configured to route its SMTP notifications through another SMTP relay. Often times, MMS is the Internet-facing SMTP Gateway and therefore makes sense to route these notifications directly through MMS. However, this may cause some issues unless MMS is properly configured.

Symptom:

1. A Secure Redirect policy in MMS may end up in an infinite loop.


When MMS sees the IME notification, it will scan and process this as any normal email message. Since many Redirect policies are triggered by a keyword, such as the word Secure in the Subject line, the notification, which retains the messages original subject, will also contain Secure and again trigger another redirection.


2. MMS must know how to route non-deliverable notifications back to the IME SMTP server.



IME will have it's own SMTP host name, such as ime.company.com, and will generate a Sender address based on this host name. Non-deliverables ("bounces") that come through MMS may not automatically route to IME.


3. MMS will not reject IME notifications with an Error 550 - Sender not allowed.

Resolution:

1. To prevent the infinite loop, use the following Exclude condition in ALL Policies on your MMS server with the Redirect Action:
   
   
   But Exclude messages where...
   X-Mailer contains "Tumbleweed IME"
   
   
2. In the Setup / Relays page, you may need to add the IME SMTP Server to the Mail Routing Rules section. It should look like:
   
   ime.company.com Accept Accept X Accept Relays
   
   The relay should point to ime.company.com
   
   (where "ime.company.com" is replaced by the FQDN
   of the server where the IME SMTP gateway resides).
   
   
3. MMS needs to allow IME to relay through it. IME is just like any other internal relay in this case, just like your Exchange or Lotus SMTP server.
   
   In the Network Connections section of the Setup / Relays page, add the IP address of the IME SMTP Gateway and check the "Internal", "Inbound", and "Outbound" checkboxes.
   

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   Original Author:
   Original Submitter: JCHOI
   Keywords: smtp relay; mms; redirect; ime MMS ID#30548