Can Postfix Restrict Senders For Mailing Lists?
I have a mailing list that was recently found by some spammers, and I was wondering, can I restrict it so that unless the sender is from mydomain.com then they are not allowed to email this address list?
I am using Postfix, Dovecot, and Procmail, if that helps out in any way. I don't know if it's even possible to do this for this particular address list only, but I thought I'd ask. Thanks in advance!