[rt-users] S/MIME signed emails are detected as non-plaintext

ms at fv-berlin.de ms at fv-berlin.de
Mon Aug 25 12:28:48 EDT 2014

On 20/08/2014 18:33, Alex Vandiver wrote:
> On 08/18/2014 11:12 AM, ms at fv-berlin.de wrote:
>> we're running RT 4.2.5 and have noticed a minor annoyance.
>> When you send an S/MIME-signed (not encrypted!) mail to RT to create a
>> ticket, the email body will be added as quoted text because "it's not
>> plain text". You can click on the quoted text to read it perfectly fine,
>> but this is still somewhat of an annoyance. Is this behaviour something
>> I can configure, maybe in a list of acceptable content-types or something?
> Can you try enabling RT's S/MIME support, and see how that improves
> things?  See:
> http://docs.bestpractical.com/RT_Config.html#Cryptography
> http://docs.bestpractical.com/RT/Crypt.html#CONFIGURATION
> http://docs.bestpractical.com/RT/Crypt/SMIME.html#CONFIGURATION
> The following should be a minimal implementation:
>     Set( %SMIME,
>         Enable => 1,
>         AcceptUntrustedCAs => 1,
>     );
>     Set(@MailPlugins, 'Auth::MailFrom', 'Auth::Crypt' );
>  - Alex

That does seem to work, although I had to add the keyring and CAPath
options because otherwise the rt-fulltext-indexer cron job would send an
error email every 5 minutes indicating it didnt find the keyring. Now
there's no log entries regarding s/mime whatsoever. This is good and bad:

- good because emails in RT show up perfectly fine now. The change is
not retroactive, but I didn't expect that, thats fine.

- bad because if you try to sign outgoing response emails, the sent
emails are empty (if "Sign" is left unchecked, they are fine). It is
entirely possible this is an error on my end putting a wrong/incomplete
keyfile there, but at least I wouldv'e hoped to find some
INFO/WARN/ERR-type log entries regarding that, but sadly not. I might
enable debug-logging and see what's going on later.

Thanks for the help!

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