EmailSigning feedback

hi,

apparently this whole emailSigning thing not so easy and there is a
plethora of "reactions" from different email clients.

maybe we should set up a wiki-page with a matrix of the creation process
and the experiences with different mail clients to come up with a
solution that suits most people.

i'm writing this because i just read sebastian tramp's last email
(preparing for TPAC teleconf) and saw something i have never seen before
in evolution mail (on openSuse 12.1) :

"Signature exists, but need public key"

when i open the cert (i cannot click on details as usual) i see:

This message is signed with a signature but there is no corresponding
key.

Version: GnuPG v1.4.12 (Darwin)
gpg: armor header: 
gpg: Signature made Mon 01 Oct 2012 02:51:29 PM CEST using RSA key ID
9D601B44
gpg: Can't check signature: No public key

wkr turnguard

-- 
| Jürgen Jakobitsch, 
| Software Developer
| Semantic Web Company GmbH
| Mariahilfer Straße 70 / Neubaugasse 1, Top 8
| A - 1070 Wien, Austria
| Mob +43 676 62 12 710 | Fax +43.1.402 12 35 - 22

COMPANY INFORMATION
| web       : http://www.semantic-web.at/
| foaf      : http://company.semantic-web.at/person/juergen_jakobitsch
PERSONAL INFORMATION
| web       : http://www.turnguard.com
| foaf      : http://www.turnguard.com/turnguard
| g+        : https://plus.google.com/111233759991616358206/posts
| skype     : jakobitsch-punkt
| xmlns:tg  = "http://www.turnguard.com/turnguard#"