> certificate b43f1e2c.0 (foo) for firstname.lastn...@charite.de added. > > But what *IS* "b43f1e2c"? Is it a serial number, a part of the fingerprint? It looks like an openssl hash, the type c_rehash generates. Like, what you may find under /etc/ssl/certs.
> > Also check the config options `crypt_verify_sig`, and > > `smime_verify_command`, `smime_verify_opaque_command` > > I'll have a look at those. > > > When receiving a smime signed mail, mutt tells me if the signature is > > valid or not. > > Well yes, but in some cases (please don't ask) my moron users have > more than one valid certifcate in use and I'd like to know which one > that is (because they don't know). I do not seem to have this problem. Maybe using S/MIME support via gpgme makes this all a bit easier to handle? gpgsm --list-keys ralf.hildebra...@charite.de would give you all information about the key, including ID (which is the last part of the fingerprint), serial etc.