mailm...@ionos.gr: > > Hello everyone, > > My current postfix configuration allows an authenticated (SASL) user to send > emails with any From: address. > > 1) Is there a way to limit From: addresses to known/configured > (virtual_mailbox_domains) domains only?
Postfix does not limit rfc822.from addresses (i.e. headders). You will need a content filter for that. Wietse