Setting a Distribution Lists return email address

[TomL]

I'm trying to create a distribution list where the reply address is a list admin and not the original sender. This way, if there are any errors in the list, the bounces would go to a list admin (who has rights to modify the list) and not the original email sender.
In the old Sendmail days, this would be something like:
emaillist::include:/emaillist.txt
emaillist-request: listadmin@example.com
owner-emaillist: emaillist-request

I'm hoping to find a way to manage this via the admin GUI (ZCS 7.2 NE) and not a zmprov command and especially not hacking postfix files (though I will if I must, I'm hoping it won't come to that )

Edit: actually, I don't want to change a Reply-To: address, rather, I want to change the envelope From address.
In looking at the raw headers, I want something like:
From DistributionList-request@example.com
From: real_user@example.com
To: DistributionList@example.com

That is, if real_user@example.com sends mail to DistributionList@example.com anyone on the list would see the above headers. That way, if there is an error on the list, it would net be sent back to real_user@example.com, but rather the person(s) listed in DistributionList-request@example.com

Thanks!
Tom

[TomL]

Does anyone know if this functionality would be in ZCS 8.0? I'm at a point where updating to 8.0 is possible but I'm not sure if it will help with this issue or not.
Tom