Creating a per-recipient rule while sending results in "Internal Error:...
OpenPGP addon for Mozilla Thunderbird
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pbrunschwig
Prerequisites: An account with encryption enabled by default.
Steps to reproduce:
Step 6 should result in a send operation (unencrypted, unsigned) without any error.
Just had the same bug with Enigmail 1.9.1 and Thunderbird 38.6.0
There was no key for the recipient, but as opposed to the other post, the encryption setting for this account is not set to always.
Do you use a SmartCard for your private key or just the usual file based keyring? Is your PC rather old/slow? I ask since I suffer a similar issue about every 10th message (sporadically) but Patrick thought it may be related to timing (and I always sign using a SmartCard, on a i7 1st gen).
What I see is that any message (new, reply, fwd) inherits parts of the sign/encrypt status from a previously viewed usage. Typically, I reply to a (non-OpenPGP) message and the EM sign+encrypt-Icons are both gold although I neither have rules not defaults to switch anything on. It seems to me there are side effects from my using S/MIME. Very difficult to pin. Maybe I should open a new bug for this issue?
Last edit: Olav Seyfarth 2016-03-21
I'm using the file based keyring. Not the newest device, but performant for things I do (e.g. browsing, writing mails), "Intel(R) Core(TM)2 Duo CPU P8600 @ 2.40GHz" (from lscpu) to be clear.
Still reproducible with Enigmail 2.1.8
Fixed as follows: the error message is now changed into a warning message with a better text indicating that encryption was disabled after hitting the Send button.