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Contacted Cisco support for a portion of the answer.
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We added two remote nodes to our exchange 2010 DAG. For some reason there are message in the remote servers that are stuck in the smtp relay queue pointing to one of our home office servers.<br />
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451.5.7.3 Cannot achieve Exchange Server authentication. Attempted failover to alternate host but did not succeed. Either there are no alternate hosts or delivery failed to all alternate hosts.<br />
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I tried adding a receive connector for the remote servers, specifying both the home office network and the remote office network then allowing Exchange server authentication and anonymous.
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We added two remote nodes to our exchange 2010 DAG. For some reason there are message in the remote servers that are stuck in the smtp relay queue pointing to one of our home office servers.

451.5.7.3 Cannot achieve Exchange Server authentication. Attempted failover to alternate host but did not succeed. Either there are no alternate hosts or delivery failed to all alternate hosts.

I tried adding a receive connector for the remote servers, specifying both the home office network and the remote office network then allowing Exchange server authentication and anonymous.

Contacted Cisco support for a portion of the answer.

SMTP Relay - Message stuck in remote dag node queue

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.