Email sender authentication

Nabeel Jafferali <[email protected]> Wed, 27 Sep 2017 16:22:02 -0400
Newsgroups gmane.comp.telephony.fax.hylafax.user
Message-ID <CABzeo_3s0YdfMh_4D6NOgY0vzCZ92rUyruDdaAV9_TXGufhB7w@mail.gmail.com>
Hello!

I'm using Hylafax+ 5.5.9 with iaxmodem 1.3.0 and Asterisk 13.17.2. This is
a new setup which I am trying to get to work for an email-to-fax solution.
So far, I have got command-line faxing working (i.e. sendfax -d <number>
<text file>).

I will be using Postfix and would like to accept email from a pre-defined
list of users (on various domains) to a publicly-accessible subdomain (i.e.
[email protected]). The information I have found thus far talks about
how to configure Postfix to pass emails destined to the fax.domain.org
subdomain to the mail2fax script.

What I am not clear about is how email senders are managed/authenticated? I
believe that to Hylafax these faxes would all be coming from the local
Postfix user, so faxadduser is not necessary? I assume then that Postfix
would need to do the sender authentication? Anyone have any examples on how
to do this?

--
Nabeel Jafferali