Help, Scenario: 2 sites: Site 1 (Cluster mbx), cas/ht secured with SAN cert (autodiscover, owa and mail.domain.com and netbios name of cas. Site 2 (mbx and cas) to be used as a DR -cas in site 2 will also be internet facing Not using ISA's, domain name inernal/external shares same name space. When setting up the 2nd cas, how is it best to go about securing it with san certificate: ie add the netbios name for cas 2 to my existing certificate then re-import my new cert into cas 1 and 2 ? or do i need to create a 2nd certificate request for a whole new san cert to include the internal and external names of cas 2 ? NBthe external name will be the same for cas 1 and 2, as CAS 2 will be allowed access to internet via firewall changes if site1/cas unavailable. Any help or articles appreciated.

Hi, I suggest you have a look regarding the following article: Certificate Use in Exchange Server 2007 http://technet.microsoft.com/en-us/library/bb851505(EXCHG.80).aspx#CertificateTrustandValidation Mike