Not Decrypting Except with "Decrypt To Folder"
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I am using Thuderbird 68 with the latest Enigmail (2.1.5). I am getting
messages that don't decrypt automatically, however if I forward the mail
or use the "decrypt to folder" function it decrypts. Any idea why it
doesn't just decrypt automatically?
Is there any message or other information?
No thats the weird thing. It simply does not decrypt (unless I forward or "Decrypt to folder"). So clearly the key is working. It is an email that is autogenerated from a pgp script. I do however get another type of email from the same script and those decrypt fine.
Can you send me such a mail (use menu Messag > Forwad as attachment)? patrick AT enigmail DOT org.
I don't need to be able to decrypt the mail.
I am using version 2.1.6 and this problem still exists. Almost every email I receive that contains HTML content I can't decrypt. The extension is unusable.
btw, thanks Ricard. your tip is the only possible way to read my emails
So far, I didn't find anything to reproduce the behaviour. Can you please send me an email that show this behaviour, such that I can decrypt it myself?
https://upload.disroot.org/r/z3gPRvt6#WGJBJi9H4I/o58kVJy4w2vyaQWSDVOnxkImBLLXFq9Y=
The mail that Adele sent me is invalid. It contains a "Content-Transfer-Encoding: quoted-printable" header, which is not allowed in the top level MIME part, as this a multipart/encrypted message [1]. Unfortunately, Thunderbird does treat the header - and as a consequence delivers garbage to Enigmail.
When doing "Decrypt to folder", Enigmail reads the complete message and does not do any preprocessing around it, and therefore the message can be decrypted. However, this approach does not work for displaying messages.
This must be fixed by the sender's system.
[1] See RFC 2045, section 6.4, first paragraph
Last edit: Patrick Brunschwig 2020-04-11
so if the email doesn't contain that specific header will the Enigmail be able to decrypt?
yes