Roberto Carna skrev den 2018-11-26 21:00:
Dear Noel, thanks for your help.
In the case of rejecting incoming mail from my own domain, do I have
to use just SPF? Or is it possible to use an ACL defined in main.cf
[3] ?
its safe to reject rcpt to domains as senders on port 25, spf is just
more simple to get working
if you send mail with submission or pickup that allow sasl auth its not
a problem on port 25
i have postfixadmin as backend, its cheap to test alias in postfixadmin
backend does not being used in port 25
so use your virtual alias to avoid forged senders on this
