problems encrypting this message

i’m trying to use email certificate and encryption in Microsoft outlook but while sending a email getting popup msg which says

“Microsoft Outlook had problems encrypting this message because the following recipients had missing or invalid certificates, or conflicting or unsupported encryption capabilities: e-mail recipient”

i’m using Microsoft Outlook 2003 and COMODO free email digital cert.

pl. help


As stated in error message, Both the sender/recipient must have valid email certificate to send and receive encrypted mails.

Please visit the following link for information on this,32,32