[MlMt] Adding S/MIME certificates to keychain from signed messages

[Matt Gray]

On 2 Jul 2014, at 3:35, Benny Kjær Nielsen wrote:

> On 1 Jul 2014, at 21:13, Matt Gray wrote:
>
>> Is there a way within MailMate to open certificates related to S/MIME 
>> signed messages?
>
> There should be a “Show Details” button in the message view if you 
> have not enabled “Hide security status banner for trusted senders” 
> in the Security preferences pane. The sheet shown when clicking on 
> this button should have an “Add to Keychain” button. (There are no 
> hidden preferences or key binding selectors to do this.)

I see that for some messages, but not all messages. For example, I had a 
colleague send me a signed and encrypted S/MIME e-mail so I can add her 
certificate to my keychain.

I see a “Security: Encrypted” header and a “Successfully decrypted 
S/MIME message.” banner, but when I click “Show Details” I get the 
following:

~~~
DECRYPTION_OKAY
------
GOODSIG <REDACTED-USER at REDACTED-DOMAIN>
TRUST_FULLY ...	
~~~

(Redacted e-mail address only; the `...` and the rest are exactly what I 
see.)

And there’s no option to add the certificate to my keychain.

If I do “Quick Look Attachments...” I see a `.p7s` attachment, so 
there is a signature there, but MailMate fails to recognize it.

I’m happy to take this off-list to troubleshoot further, but posted it 
here in case anyone else was seeing the symptoms.

--
Matt