The Comodo Domain Validated (DV) UCC is one of the quickest ways to secure multiple domains with just a single SSL certificate. As a Unified Communications certificate, this product has been designed exclusively for Microsoft Exchange 2010 as well as Office Communications Server 2007. Additionally, because this is a domain validated (DV) certificate, it can be issued to a domain in just a matter of minutes. There is simply no quicker option for when you want to secure your Microsoft Exchange or Office Communications servers.
Comodo DV UCC