I have some SSL certificates problem.
We have an Exchange 2010 server hosting mailboxes for mydomain.com, otherdomain.com and thirddomain.com. It's internal name is myserver.mydomain.local.
When setup, it came with its self-signed certificate on the name "myserver".
We already have an SSL certificate for mail.mydomain.com (containing the SAN mydomain.com), and want to use it so everyone will connect to OWA / Activesync / Outlook Anywhere etc. using the url : mail.mydomain.com.
The only resources I find searching the web are telling me to create a certificate request using the Exchange MMC, then forward it to the CA to issue a new certificate then complete the request on the Exchange server.
But how can I re-use our existing certificate ? It is fine, it has already the good server names in it, we don't want to re-pay for a new certificate ! (also we should pay for revoking the old one before a new one could be issued).