Encountered email problem about digital ID. When I send out an email, I get an error message which proclaims, 'you do not have a digital ID. IF you send this message, it will be sent properly, but will not find in the sent folder.'

Anyone knows why I am encountring this, and offer a solution.

The next message comes like this, 'xy@hotmail.com digital ID missing. and offers a button for 'dont encrypt' and 'cancel'. hitting the first button sends email out okay, but i wonder it would be unsafe as it wont be encryp.

Any suggestions for me to get rid fo this irritant? Thanks