I am asking this for a friend that owns a blackberry:

When replying to a digitally signed e-mail sent to me (from Outlook smime attachement) the folks who receive my e-mails say it shows an icon that it is digitally signed and when they try to open my reply, Outlook says Error in underlying security system. Looking at my reply email header it shows that I did sign it but I did not the one sent to me was signed. Whats going on here?

The header part I am referring to:

"Content-Type: multipart/signed; boundary="----=_NextPart_000_0028_01C658AE.EB770F00"; micalg="SHA1"; protocol="application/x-pkcs7-signature"

Also:

Do you know if:Blackberries can run the Filemaker database and do they have Barcode reading ability?