[Users] Signatures don't seem to work

[Andrej Kacian]

On Fri, 30 Aug 2019 12:49:11 +0300
mlist wrote:

> I also notice that this particular signature is:
> 
> smime.p7s (application/pkcs7-signature, 6.39KB)
> 
> Yours and others don't show like that.

Well, I'm leaving shortly for the weekend, so I do not have time to
properly unpack this, but essentially there are two distinct types of
digital signatures you're encountering here.

The first is PGP signature, which is what I use to sign my messages.
They are handled using the "gpg" program, which has its configuration
in ~/.gnupg/gpg.conf.

The second kind is S/MIME signature, which is built on TLS PKI (same as
HTTPS for websites), and is handled using the "gpgsm" program, which
has its configuration in ~/.gnupg/gpgsm.conf.

Each works in a completely different way, and you should treat them as
separate problems when solving your issue. S/MIME signatures do not
fetch the public keys from a keyserver, but instead you have to have a
trusted TLS certificate in your certificate store.

I suggest focusing first on making verification (and in case of PGP,
automatic key retrieval from keyservers) work using the mentioned two
programs on command line. The folks at GnuPG mailing lists can help you
with that.

Claws Mail expects your gpg/gpgsm configuration to be correct and
working.

Regards,
-- 
Andrej
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