[Mailman-Users] Acknowledging sender when moderated message is accepted

[David Pane]

I administer a mailman (version 2.1.15) server (CentOS 7) which contain 
40-50 lists (including umbrella lists).  When a sender's email is held 
for moderation, we would like to acknowledge the sender when that post 
is "Accepted" by the moderator in a similar fashion as we do when the 
moderator "Rejects" a message (default message with ability to 
customize).  This will avoid the user wondering if the email was sent 
out to the list.

The acknowledge option gets us part of the way, but I could not find a 
way to acknowledge non-members who post to a list. It is common for a 
non-member to send legitimate email to our lists (e.g. faculty member 
sending to student lists).  I believe there will also be an issue with 
receiving acknowledgements from one of the individual list member of an 
umbrella list since they are not treated as an ordinary users thus they 
cannot set the acknowledge option flag for that list.

I have tried using the setting "Receive your own posts to the list?" set 
it to "Yes" and the server logs show an email is being sent, the email 
provider's duplicate suppression renders the user not actually seeing 
that email come into their inbox.

Any help is greatly appreciated.

Thank you,
David