I am looking for a solution to the following problem. I have a client that is running Exchange 2007 with Outlook 2003 mail clients. They have an internal Active directory domain with a domain name of DomainName.int. I am in the process of upgrading the Outlook client to Outlook 2010. “When launching the client I get the pop up message “The name of the server does not match the certificate”. When I look at the SAN Cert for the Exchange server I noticed that the e-mail server FQDN is not included the SAN certificate. To get rid of the popup box I need to add the FQDN of the internal Exchange server to SAN Cert, correct? Being that their internal domain name is DomainName.int, can I add a .int to the SAN Cert now that they have created the new international domain? Is there a way to get rid of the certificate error if the FQDN cannot be added?