Hi -- I am currently running PGP Desktop v10.1.2 Build 9 on a MacOS 10.6.7.  I am attempting automatically  to sign all email messages where the PGP key is found.

I am using Apple Mail 4.5 (1084) to send messages. 

I modified the Opportunistic Encryption Security Policy to send ..if a recipient key cannot be found ... 'clear-sign message'.

I tried sending the email messages to my personal account.  I attempted to set the message encoding to automaic, PGP/MIME/S-MIME, etc.  But the PGP signed message is being received as a clear-text message with PGP.sig attachment.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Fri, 20 May 2011, USER  wrote:

MY MESSAGE.

   Done.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)

REDADACTED PGP KEY.

-----END PGP SIGNATURE-----

Can someone help me set it up so that all unencrypted messages are sent as a PGP signed message?  Thanks!