http://blogs.technet.com/girish/archive/2009/04/25/how-to-add-a-subject-alternative-name-to-a-secure-ldap-certificate-in-sbs-2008.aspxThis method can only be used with self assigned certs (To request certificate from an Internal MS CA) and not with 3rd party certs. To get SAN for a 3rd party cert contact the vendor. (We can use the same .req file to request 3rd party SAN certificate).en-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/girish/archive/2009/04/25/how-to-add-a-subject-alternative-name-to-a-secure-ldap-certificate-in-sbs-2008.aspx#3299350Wed, 09 Dec 2009 11:13:43 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3299350Jamie Gellar<p>Good info. Particularly when checking the&lt;a href=&quot;<a rel="nofollow" target="_new" href="http://www.ssl247.com/ssl-certificate-signing-solutions/ssl-certificates/san-unified-messaging-ssl-exchange-server-ssl.php&quot;&gt;Subject">http://www.ssl247.com/ssl-certificate-signing-solutions/ssl-certificates/san-unified-messaging-ssl-exchange-server-ssl.php&quot;&gt;Subject</a> Alt Name SSL&lt;/a&gt; have been added successfully. Many of my clients require SAN, due to their various domain names, so this is a great technical source!</p>