Greetings. I am trying to get a SAN SSL cert purchased from godaddy to work on exchange 2010. I exported this cert from one server and was succesful in getting it to work with 2 other CAS servers but with this one it says "The certificate is invalid for exchange." When issuing the command get-exchangecertificate I get AccessRules : CertificateDomains : {mail.domainname.com, www.mail.domainname.com, email.domainname.com, webemail.domainame.com, autodiscover.domainname.com} HasPrivateKey : True IsSelfSigned : False Issuer : SERIALNUMBER=(NotSent), CN=Go Daddy Secure Certification Authority, OU=http://certificates.godaddy. com/repository, O="GoDaddy.com, Inc.", L=Scottsdale, S=Arizona, C=US NotAfter : 10/29/2011 12:48:37 AM NotBefore : 10/29/2010 12:48:37 AM PublicKeySize : 2048 RootCAType : Unknown SerialNumber : (Not Sent) Services : None Status : Invalid Subject : CN=mail.domainname.com, OU=Domain Control Validated, O=mail.domainname.com Thumbprint : (NOT SENT) AccessRules : CertificateDomains : {Servername, Servername.domainname} HasPrivateKey : True IsSelfSigned : True Issuer : CN=ServerName NotAfter : 10/20/2015 4:15:37 PM NotBefore : 10/20/2010 4:15:37 PM PublicKeySize : 2048 RootCAType : None SerialNumber : (NOT SENT) Services : IMAP, POP, IIS, SMTP Status : Valid Subject : CN=ServerName I did try to install the intermediates godaddy provided even though it was not required for the other 2 servers. All servers are 2008 R2. How can I tell why the rootcattype is Unkown. On the servers it is working on it says 3rd party. Thanks Joe

Hi Did you export the certificate with the private key? That needs to be done, and check for the intermediate certificates Also check the certificates path from the server that it works on, with root and intermediate certificate(s)Jonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog