We are using exchange activesync/owa and created a self signed certificate for the external mail address. Now all of our internal mail clients (outlook 2007) are receiving a certificate error stating "The name on the security certificate is invalid or does not match the name of the site". We have purchased a multidomain certificate from GoDaddy to satisfy both the internal and external names for the mail server. We received 2 files - one is a .p7b file and the other is .crt file. How do we get this certificate imported/installed on the server? Thanks in advance for the responses.