SChannel Errors on Front Ends Affecting Client Connectivity Between Pools

We have an SE pool in Asia. A user tried attending a conferencing hosted on the US EE pool but received an error. Looking in the logs I see the following error (30988) in the Lync events on the Asia server:
Sending HTTP request failed. Server functionality will be affected if messages are failing consistently.
Sending the message to https://uslyncpool.company.loc:444/LiveServer/Focus failed. IP Address is xxx.xxx.xxx.xxx. Error code is 2EFE. Content-Type is application/delegateAuthz+xml.
Http Error Code is 0.
Cause: Network connectivity issues or an incorrectly configured certificate on the destination server. Check the eventlog description for more information.
Resolution:
Check the destination server to see that it is listening on the same URI and it has certificate configured for MTLS. Other reasons might be network connectivity issues between the two servers.
Followed by the warning (32052):
An HTTP application request sent to a Service timed-out. Requests will be retried but if this error continues to occur functionality will be affected.
Url: https://uslyncpool.company.loc:444/LiveServer/Focus
Cause: Network related error or destination service being non-functional.
Resolution:
Ensure that the Service is provisioned and functioning correctly. If any network related errors are reported by the Service ensure that they are resolved.
On one of the US servers (we will call it serverB) I see this Lync event (14428) around 25 seconds later:
TLS outgoing connection failures.
Over the past 28 minutes, Lync Server has experienced TLS outgoing connection failures 2 time(s). The error code of the last failure is 0x80090322 (The target principal name is incorrect.) while trying to connect to the server "serverA.company.loc"
at address [xxx.xxx.xxx.xxx:5061], and the display name in the peer certificate is "Unavailable".
Cause: Most often a problem with the peer certificate or perhaps the DNS A record used to reach the peer server. Target principal name is incorrect means that the peer certificate does not contain the name that the local server used to connect. Certificate
root not trusted error means that the peer certificate was issued by a remote CA that is not trusted by the local machine.
Resolution:
Check that the address and port matches the FQDN used to connect, and that the peer certificate contains this FQDN somewhere in its subject or SAN fields. If the FQDN refers to a DNS load balanced pool then check that all addresses returned by DNS refer
to a server in the same pool. For untrusted root errors, ensure that the remote CA certificate chain is installed locally. If you have already installed the remote CA certificate chain, then try rebooting the local machine.
We are also seeing the following SChannel (36884) error on our servers (but not at the same time as the errors above):
The certificate received from the remote server does not contain the expected name. It is therefore not possible to determine whether we are connecting to the correct server. The server name we were expecting is serverA.company.loc. The SSL connection
request has failed. The attached data contains the server certificate.
We are seeing this periodically and from other locations.
What is odd is serverA seems to expect to find its name in serverB's certificate. This is a two server EE pool and I have never seen that requirement. We have the pool name and each server name in the SANs along with all the other typical names
(sip, lyncdiscover, etc.) on both servers but I have never seen anything state that the FQDNs of all machines in the pool need to be in the certificate on every server. I fact, the wizard doesn't even do it.
Am I wrong on that?
Lync Server 2010 CU7, hardware load balanced

You need to install each other’s Root Certificate in local computer’s Trusted Certification Authorities store. Delete the duplicated certificates in personal store on server in both Asia and US.
Check if you can ping FQDN uslyncpool.company.loc from server in Asia.
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http://tsoorad.blogspot.in/2013/04/lync-2013-ee-pool-wont-start.html
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sure that you completely understand the risk before retrieving any suggestions from the above link.
Kent Huang
TechNet Community Support

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