Can you read this email? (second attempt)

[Kevin Godby]

Hi, C.

On Wed, Mar 8, 2017 at 5:53 PM, C de-Avillez <hggdh2 at ubuntu.com> wrote:
> Well, it it, and it is *not*. But, to make a long story (and some emails
> sent to the WRONG mailing list) short:
>
> @Kevin:
>
> please add the two following contents as maintained:
>  * application/pkcs7-signature
>  * application/pgp-signature
>
> These carry the actual signatures for S/MIME and PGP/MIME.

Right.. well, that raises a question, I guess.

While the attachments will be stripped, the message body should still
come through okay now. The message body has a content type of
multipart/signed and the attachment would be one of
application/pkcs7-signature or application/pgp-signature.

If we want to allow the signature attachments to come through, I can
add those content types to the whitelist.

Any content type not on the whitelist (whether the full message or
individual attachments) will be stripped away. If all the content in a
multipart message is removed and nothing remains, or if the top-level
message itself has a content type other than those whitelisted, then
the entire message will be discarded.

The whitelist currently contains the following content types:

 • multipart/mixed
 • multipart/alternative
 • multipart/signed
 • text/plain

—Kevin