==== Required information ====
- iRedMail version:  0.8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Linux/BSD distribution name and version: Ubuntu 12.04
- Related log if you're reporting an issue:
====
It's my first time setting up a mail server. iRedMail seems to have gone on okay but incoming emails are bouncing with the following header.  Not sure where to begin troubleshooting, would someone take a look at the header (below) and give me some pointers?  Is incoming email being rejected by the server, or is it being bounced by the ISP, or someplace else?  I've never tried forwarding a port before (Netgear Nighthawk router) and I don't actually know if port 25 is being routed to the correct internal IP or not -- is there a way to test this?  Many thanks in advance.
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This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  neil@diaf.ca
    SMTP error from remote mail server after RCPT TO:<neil@diaf.ca>:
    host smtp.secureserver.net [72.167.238.201]: 550 #5.1.0 Address rejected.

------ This is a copy of the message's headers. ------

Return-path: <neiltholland@gmail.com>
Received: from 216-113-200-221.static-pppoe.dsl.ucc-net.ca ([216.113.200.221] helo=[10.0.0.2])
    by smtp-relay1.uniserve.net with esmtps (TLSv1:AES128-SHA:128)
    (Exim 4.72)
    (envelope-from <neiltholland@gmail.com>)
    id 1WatLa-0003to-Ls
    for neil@diaf.ca; Thu, 17 Apr 2014 13:55:50 -0700
Message-ID: <53503FF7.2060408@gmail.com>
Date: Thu, 17 Apr 2014 14:56:23 -0600
From: Neil Holland <neiltholland@gmail.com>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0
MIME-Version: 1.0
To: neil@diaf.ca
Subject: test100
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Sender-Info: neiltholland@gmail.com
X-Scanner: OK. Scanned.
X-Uniserve-Spam-Score: 3.4 34 (+++)
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