Hey there,

I just thought this may be hard to test as one has to have a smime
certificate to properly receive an encrypted mail.

If someone can point me to the right approach how to fix this I may be
able to dive a bit deeper into the gnus code and submit a bug report.

This is what I have tried now just to get something:

If I alter mm-view-pkcs7-decrypt after the insert epg-decrypt-string to
call something like this: