[Enigmail] Thunderbird auto-encryption issues

Rémi Saurel <[email protected]> Sat, 11 May 2019 17:05:16 +0200

Newsgroups	gmane.comp.mozilla.enigmail.general
Message-ID	<[email protected]>

Hi,

I'm using Enigmail 2.0.10 with Thunderbird 60.6.1 on Linux, and I'm
having a weird issue.

I want all of my outgoing messages to be signed automatically, and when
I have the recipient(s) key(s) in my keychain, encrypted automatically
as well.

So far so good, this works with multiple email accounts on my side, and
for multiple recipients (be it once at a time, or several recipients for
the same message).

The behavior is as expected: my messages are all signed, and they are
encrypted unless a member of the recipients list lacks its public key in
my keychain.

But there is this one address, which as soon as I add it to the
recipient list, causes the following to happen:
* Disabling auo signing of the my message
* Do not enable encryption despite the corresponding public key being
present in my keychain.

This all happend before sending, so I can force message encryption and
signing (if I notice in time) and send the (correctly encrypted and
signed) messsage, all without having to manually point at the right
public key. This proves that the key in my keychain is the right one and
can be found automatically.

To be clear, there is no problem with encryption/signing per se, only
with the way it is auto-enabled (more precisely, unexpectedly disabled).

It seemed to correlate with the specific public key, so I deleted it
completely from my keychain, restarted Thunderbird.
Still the issue: if I type any other address, everything is good. As
soon as the last caracter of the faulty address is entered (like, the m
of .com), signing is disabled.

Thus, it seems to be caused by the address in itself, not the public
key. But I have checked, there is no recipient-specific rule in Enigmail!

Any hint for where to search now?

Thanks in advance !

Rémi

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