postfix-users May 2014 archive
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postfix-users: Re: postfix setup: machine with live ip forwardin

Re: postfix setup: machine with live ip forwarding traffic to home machine

From: Rick Zeman <rzeman_at_nospam>
Date: Mon May 05 2014 - 17:43:04 GMT
To: hiren panchasara <hiren.panchasara@gmail.com>, Postfix users <postfix-users@postfix.org>

On Mon, May 5, 2014 at 3:36 AM, hiren panchasara
<hiren.panchasara@gmail.com> wrote:

> This is how it should work, afaik:
> Sending: Initiates from my home box and go out via VM.
> Receiving: VM receives it and forwards to home box.
>
> (I've also tried sending through my home machine on port 587 but the
> home comcast IP is blacklisted)

There's really no good reason to not send via Comcast's authenticated
relay unless you need the ability to pore through logs to be assured
of delivery. That way, Comcast won't notice you sending to a
non-Comcast destination and you won't get busted for running an
illegal MTA.

Adding to what Wietsie says about the Primary MX having to do all of
the checks, I use Dyn's email gateway for home. They hold the MX,
they do the spam filtering/white or blacklisting, and since they use
Postfix, the address verification works just fine so I don't
backscatter at all.

Fly under the radar, dude. That's the best advice for home. If you
want a lab, rent some cloud space.