s/mime not signed digitally

Hello

I have a strange problem it Thunderbird is not simply sign or encrypt.
I added my comodo of s/mime certificate to thunderbird, I checked that the certificate was valid within thunderbird.

to digitally sign option is enabled by default
Encrypt digitally is set to 'never' by default.

now when I send emails they contain any certificate.
So it appears thunderbird is simply not digitally signed at all.

I use thunderbird since Ubuntu, I don't know if I need to do anything with the safety devices (I left this default).

Any help on this will be appreciated.

Kind regards
Marco

everything you see in Thunderbird for digitally signed e-mail messages is an icon in the message header. an envelope with a red spot on it. No attachment. Even with most of the customers mail that include s/mime. Usually, only those who do not understand s/mime show attachment because they don't know what it is.

Tags: Thunderbird

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