Msexchangeadtopology when updating security for a remote procedure call

I had an issue at a customer site where a vitalised multi role Exchange 2010 server was randomly loosing access to Active Directory.

There were two Active Directory Domain Controllers with the Global Catalog role in the same Active Directory site as the Exchange 2010 server with highspeed 1gbps LAN between the servers.

The Back Net/Public NIC is the one which connects the servers to the rest of your network, this needs to be the first NIC in the binding order.

When updating security for a remote procedure call (RPC) access for the Microsoft Exchange Active Directory Topology service, Exchange could not retrieve the security descriptor for Exchange server object Exchange2010 - Error code=80040934.

Ever since our IP schema change (3 weeks ago), we have been receiving these errors in the event logs: 1. The site monitor API was unable to verify the site name for this Exchange computer - Call=Dsctx Get Context Error code=8007077f. When updating security for a remote procedure call (RPC) access for the Exchange Active Directory Topology service, Exchange could not retrieve the security descriptor for Exchange server object SERVERNAME - Error code=8007077f. When initializing a remote procedure call (RPC) to the Microsoft Exchange Active Directory Topology service, Exchange could not retrieve the SID for account - Error code=8007077f.

The issue was caused by adding a second IP address to the server so that I didn't have to reconfigure all the mail-enabled devices, hosts and applications.

I retired the 20 servers and gave the two extra IP addresses to the Exchange 2010 server.

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