UCC SSL Certificate understanding

[adnankk]

I have purchased UCC SSL for 5 domains, I want to install these of my two mail servers(one.xyz.com & two.xyz.com), So how can i generate certificate. 

Generate certificate for both separately, or generate certificate for xyz.com and then add 2 sans one.xyz.com and two.xyz.com.

[sandeepc]

I ran into this very same issue yesterday. I have 2 domains. In certs.godaddy.com, I made my primary domain the "owner" of the cert under "Change the site your certificate protects". It could be one.xyz.com for you. Then added my other domain as a san ,so two.xyz.com as a san.

The tricky portion for me was generating the right CSR. I was creating certs for my website under apache, so my process might be different from yours. However I found certificatetools.com very useful.

EDIT: I wanted to specify that I used only one certificate for all domains. It makes things a LOT easier to manage.