[Mailman-Users] bouncing process does not return messages on user unknown

Camelia Botez camelia.botez at weizmann.ac.il
Tue Jun 2 13:50:09 CEST 2015

We run mailman-2.1.17 on rhel6 platform.
I have a list containing some unknown users.
When a messages is sent to this list , none of the administrators gets back a message of unknown user .
The bounce does not send back the status of the message ( diferred , unknown user etc).
How can I fix this?

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