Trying to send email to a domain outside ours. Getting an
undeliverable back from my GWIA, only seems to be for this one domain,
at least that I've heard.

GWIA uses our Gwava server as an outbound relay, and it's allowed.
Undeliverable message is:

The message that you sent was undeliverable to the following: (503 Sequence)

Information about your message:
Subject: Test
GroupWise Message Id: 52FBE0EA.4B2:244:48050
Message log tag: 1372050
Number of send attempts: 1
Time of initial send attempt: 02-12-14 14:00:56

Possibly truncated original message follows:
Received: from campgwia-MTA by <our MX record>
with Novell_GroupWise; Wed, 12 Feb 2014 14:00:55 -0700
Message-Id: <52FB7E7A020000F4000A74B2@our_MX_record>
X-Mailer: Novell GroupWise Internet Agent 12.0.2
Date: Wed, 12 Feb 2014 14:00:26 -0700
From: "Me" <my_email@ourdomain>
To: <>
Subject: Test
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

Any ideas or suggestions?