It is the very first thing you must do. If Outlook fetches an incorrect certificate, you will keep seeing this error. Therefore, click on the View Certificate button ...

The name on the security certificate is invalid or does not match the name of the target site webmail.domain.com. Outlook is unable to connect to the proxy Server ...

You do not need to have a certificate in order to read a signed message.<BR><BR>I don't know about Blackberries, but you might see if there is some way to export the cert and key from your device onto ...