Symantec encryption S\MIME send email as attached

Hi,

We have configured Symantec encryption desktop to send signed email with protocoll S\MIME.

When I send a signed email, the email is sent as attachemet and at Destination I receive a blank email with attached the email that I sent.

The correct behavior is send the email with attachemnt only the sign,like when i sign an email using protocoll S\MIME directly from outlook

Thanks

Ciao,

Giovanni