[Mailman-Users] Mailman sending to Exchange 2010 Mail service.

Collins, Alex Alex.Collins at anglia.ac.uk
Fri Nov 18 14:20:36 CET 2011

Hi Everyone. 

We run  Mailman as a department. Our core mail service is Exchange 2010.
Exchange is running in Shadow Redundancy mode which means it uses a Message DE duplication system.
I'm lead to believe that this is based on the Message-ID. (Please correct me if I'm wrong !)

In short, if a user posts to more than 1 list, Exchange dedupes the message on the way back. 
This means users only get 1 list message. It's causing Chaos !


RFC's and the non PC tampering of message headers aside:
How can I use Mailman (or even sendmail) to remove the Message-ID so that Mailman will set its own Message-ID and we can actually send messages to more than one list.

I'm 100% aware that this is not a Mailman issue. If I'm too far OT, I send my apologies.


Alex Collins.                   Library Systems and Support Officer.
Rivermead Library.              Tel: 0845 XXX XXXX
alex.collins (at) anglia.ac.uk     http://libweb.anglia.ac.uk
This product is printed with 100% recycled electrons !


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