I have a Postfix / Hylafax system for email-to-fax however I need to prevent emails that are NOT of the form
<phonenumber>@fax.mydomain.com
to be forwarded on by email.
How do I do this or where is that configured?
Or is there a method for transport mapping one or two standard user addresses?
My current /etc/postfix/transport file:
fax.mydomain.com fax:localhost
My current /etc/postfix/master.cf:
fax unix - n n - - pipe flags= user=fax argv=/usr/bin/faxmail -d -n -N -T ${user}