I'm using KMail for my mail (obviously). After I installed gnupg and set the keyserver option, I now have KMail automatically recognizing signed mail. Problem is, more often than not I get mail with the warning: "Message was signed by unknown key ID foo" I'm sure it's a gnupg problem (if at all). So the question, why are some signatures not recognized? Are all keyservers equal? If not, can someone point me to "good" keyserver?