Hi all.

Due to the demise of the Sixxs project, which I was using to bypass the
ISP’s filtering of port 25 (in/out), I would like to open a "private" port
on postfix.
It’s a non-standard port and I will be filtering the src range at firewall
level so I’m pretty confident there will be no abuse.
I also want to avoid adding the subnet to mynetworks since I find it
easier to work on the firewall rather than the mail server.

I was able to have postfix listen on the new port but I realized all
sender and client restrictions are still being enforced despite passing a
<permit> directive:

XXXXX     inet  n       -       -       -       250       smtpd
  -o smtpd_client_restrictions=permit


Furthermore, the server advertises a whole bunch of stuff I don’t really
need (at least not on that port):

250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN



What is the correct configuration to provide a bare smtpd process that
will accept all mail on that specific port and treat it as if it was
coming from a mynetworks host?

Thanks!


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