Hello, I've installed a server dedicated to Mailman and necessary
Postfix for transport, following approximately this guide:
https://help.ubuntu.com/10.04/serverguide/C/mailman.html
But when a message is sent to the list, it's rejected by Exim with:
Diagnostic-Code: smtp; 550 Unrouteable address
And when I create a new list in Mailman, it's froxen with this log data:
routing failed for mailman-loop@???: Unrouteable address
*** Frozen (delivery error message)
What should I look in the Exim configurations to find the matter?
Thanks
