Delivery failure

I configured email and it mostly works, but the email delivery fails.  The message is sent to Sophos, gets scanned and is determined to be legitimate, but then there is a delivery failure with DNS 5.0.0.

I've attached the header detail below.  Can anyone provide a pointer to what I need to do to fix this issue?  Thanks.

Authentication-Results: mx-01-us-east-2.prod.hydra.sophos.com; spf=pass smtp.mailfrom=ploconte@geobeagle.com; dkim=pass header.d=geobeagle.com header.from=geobeagle.com
Received-SPF: pass receiver=mx-01-us-east-2.prod.hydra.sophos.com; client-ip=66.111.4.27; envelope-from=<ploconte@geobeagle.com>; helo=out3-smtp.messagingengine.com;
X-Sophos-Processing-Start-Time: 1592354320273
X-Sophos-Email-ID: be9686281b4c48298fad80b3db64ae12
Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx-01-us-east-2.prod.hydra.sophos.com (Postfix) with ESMTPS id 49mmQS0RyczMkrn for <ploconte@vistastrategicadvisors.com>; Wed, 17 Jun 2020 00:38:39 +0000 (UTC)
Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.nyi.internal (Postfix) with ESMTP id 23AC95C00E2 for <ploconte@vistastrategicadvisors.com>; Tue, 16 Jun 2020 20:38:39 -0400 (EDT)
Received: from imap2 ([10.202.2.52]) by compute3.internal (MEProxy); Tue, 16 Jun 2020 20:38:39 -0400
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=geobeagle.com; h=mime-version:message-id:date:from:to:subject:content-type; s= fm3; bh=5ET9Z3fx02lN1Dq7cuULSV9rp74ZQCkoeYbA7p1x9JU=; b=YF+rL3lk SBc2NkGJrAoCvUFDVdm964IMWjXLoIbt8KnIHpPuyGLG8TNic436t9hSxXc1BC5X 6qmwapE7lxzApzPjrp+dsIN3DcMjJfq3ISVsH6byNsOrjwqJBDObCpijA6P5Mu+f Be+WBcZPx1XrJVmdogCabmMiPg8XvWtvsNxV7KJowN7O4hWMSR98ip1wKY3McjVD HnR/CI37GqA68cjcGCEbgMwFo3smAm47HeBJU9VAwlVnmXmr7mHkdYihJE3AJyYV wa18XucRnMx21lc8RMXVuvYdY4HoGscoc8QJCHsI8jJaFiIYd6nuS0rDQaNsywI+ r5MQfvN7U1ARSg==
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:date:from:message-id :mime-version:subject:to:x-me-proxy:x-me-proxy:x-me-sender :x-me-sender:x-sasl-enc; s=fm3; bh=5ET9Z3fx02lN1Dq7cuULSV9rp74ZQ CkoeYbA7p1x9JU=; b=Ml7Bx6pgZzMUV/mvQP9oUN9aaxIPqBD1Icm4YeNqQ30lQ TN5qB/4glRxefgchpsJgZ+KkxFYrYQTHPpqo4HK4LkMjuoaVdAWiUgAgfpFT/l/K KBKhu05YCV312nGKhE6PNt8DGPsZqokX7LyoqvhICd0+zZ9/yFzT8/S8CaFWlDRF GASTczLlSeyFjr4OOc3DqELvyhzNWSrFjCXzMMa6CEfVZeWuSiHzdTPst6eMFbA+ z2rMCTuE2U/aPDUmSIwqCEZT9Z+dihaumM8nOqsXzn5EfybryEQtwWdIg3GxPzvZ 1h7bzrgJ2/mZ3RXxoP+fwdzIGJLQg2J+t2J9ZYLjw==
X-ME-Sender: <xms:DmbpXndHB_abO1SWQHjGFv0v48Cutn8tVnRdZ3jvv1WyvT29hOnMPw>
X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrudejuddgfeejucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefofgggkfffhffvufgtsegrtderre erredtnecuhfhrohhmpedfrfgrthhrihgtkhcunfhovehonhhtvgdfuceophhlohgtohhn thgvsehgvghosggvrghglhgvrdgtohhmqeenucggtffrrghtthgvrhhnpefghfduvdehve dtkeehgeegveeiledvjeetledvudfhheetiefgueeiieevuefhjeenucevlhhushhtvghr ufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehplhhotghonhhtvgesghgvoh gsvggrghhlvgdrtghomh
X-ME-Proxy: <xmx:DmbpXtNz-KbsWiNmGQwZ1Chcaldb9dvEZxw1qcKF3R2YsJcQbXaSxQ> <xmx:DmbpXgg7vQd2CP3alK-5q9J4fOFy7saNO4kvcCyrNeOPFZNZEDIiow> <xmx:DmbpXo--3u57DdydYcs55idIR4Mniha6zL47AUsbd9tQa3X39J6J-Q> <xmx:D2bpXkNjQspgoQ89dhNy-5S7zK7Xv0HRqTlk2_FhUrLjvUwCmRd_dw>
Received: by mailuser.nyi.internal (Postfix, from userid 501) id D207DE00F8; Tue, 16 Jun 2020 20:38:37 -0400 (EDT)
X-Mailer: MessagingEngine.com Webmail Interface
User-Agent: Cyrus-JMAP/3.3.0-dev0-529-g3ee424a-fm-20200611.001-g3ee424a1
Mime-Version: 1.0
Message-Id: <3972a1c4-e801-4c92-b271-3b21e9ce8558@www.fastmail.com>
Date: Tue, 16 Jun 2020 20:38:07 -0400
From: "Patrick LoConte" <ploconte@geobeagle.com>
To: "Patrick LoConte" <ploconte@vistastrategicadvisors.com>
Subject: test 4
Content-Type: multipart/alternative; boundary=65178f2261ae47658917d6cbd8b19785