Moving mailboxes from a 2003 to 2010 Exchange environment.
After the move while pointing to Cas Array. Mailbox opens but I get cert error

I put a new cert on the 2 CAS servers.  Does it need to anywhere else.

Thanks

If your users gets certificate warnings, you probably doesn't have the servers internal FQDN Names in the certificate, so you need to change some InternalUrls and Autodiscover SCP to fix that.

Outlook 2007 security warning: "The name of the security certificate is invalid or does not match the name of the site"
http://support.microsoft.com/kb/940726