I have an Exchange 2010 environment that is using a GoDaddy issued UCC SSL certificate. I need to add an additional SAN to the certificate which I can do on the GD site then re-key. My question is on the csr side. Do I need to use the Exchange mmc to create a new csr or can I use the IIS mmc? I started the wizard using the Exchange mmc but stopped when asked about the services. What exactly do I need to select here? It is a bit confusing seeing as Exchange is treating it like a new cert and GD seems like they are simply re-issuing the cert with the new SAN.
Can someone explain exactly where I need to do the csr from and what information I need to include in this scenario?