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Date: Fri, 14 Oct 2011 18:13:18 -0700
From: kashani <kashani-list@badapple.net>
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Subject: Re: [gentoo-user] Postfix to relay mail even if acting as primary
 MX host?
References: <CAA2qdGUyBWPyya9iryz12u26=MwfpwFpomyLV+aLurV8EbM8qA@mail.gmail.com>
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On 10/13/2011 3:11 AM, Pandu Poluan wrote:
>
> # NOTE: Postfix will not automatically forward mail for domains that
> # list this system as their primary or backup MX host. See the
> # permit_mx_backup restriction description in postconf(5).

	The point of this is to say, "If some dude points DNS at your server 
and/or configures their mail server to send mail to yours, it's not 
going to relay mail for them. You have to actually configure the domains 
to be relayed."

	Since you're planning to configure the domain you should be fine. Also 
less overthinking and more testing solves most of this stuff quicker.

kashani