Thanks for the quick response, that was quite helpful.

What does this exactly mean?

"Changing the host name triggers an automatic, self-signed Certificate Regeneration. After the server reboots  automatically, secure  connections to this server will fail until the CTL client is rerun and the  CTL file is updated."

How do I run the CTL client?

Hi

It means that the trust list would be updated - i.e. the list of servers that the phones know are legitimate CCMs you are using encryption and authentication on your cluster.

If you aren't running endpoint encryption and authentication then it's not to worry about.

As you have said you don't want a cert mismatch being presented to admins and users after the change, you'll have to go through the CSR process (from http://publisher/cmplatform - Certificate Management menu).

It's very important to pay a lot of attention to that document Rob posted - all the verification steps are important and if you miss anything it's not so much the phones that have a problem (as you say, they're normally more interested in IPs) but the actual services and replication configs on the server that will break. The most common one is that the DB just doesn't start...

Aaron

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