Signed messages

Hi,

I saw quite many PGP signed messages in this list.
How can I get the posters' public keys easily from mutt?
On one particular message, I had the following:
[-- PGP output follows (current time: Tue 08 Oct 2002 02:52:39 PM WIT)
--]
gpg: Signature made Tue 08 Oct 2002 01:05:31 PM WIT using DSA key ID
FA2C3588   
gpg: Can't check signature: public key not found
[-- End of PGP output --]

It wasn't found because I didn't have it already, of course.

BTW, why don't people put their public keys on key servers like
pgp.mit.edu? The keys would be propagated to other servers anyway; the
ones in pgp.net. I believe that would make our lives a bit easier; one
definition of keyserver in ~/.gnupg/gpg.conf, we could retrieve others'
public keys.

Oki