[Mailman-Users] Mac, me, icloud. Many domains one user.

[Marino Pascal]

Long time lurker, first time poster.

I have subscribers who subscribed with user at mac.com and then they try to post from user at me.com or user at icloud.com and their mail bounces off 
course since only subscribers can post.

I know how to add addresses with the "accept_these_nonmembers Option" but I have quite a few .mac users and I'm wondering if there is a way to 
treat
mac.com, me.com & icloud.com as interchangeable.

http://support.apple.com/kb/ht2623

Thanks
Marino Pascal