Problem with Let's Encrypt Certificate

@lbutlr
Sat, 18 Feb 2017 18:01:54 -0000

On 2017-02-17 (09:58 MST), Bastian Sebode <b.sebode at linet-services.de>
wrote:
>
> Weirdly my friend uses the same Dovecot Version with Let's Encrypt on
> his Server and it works with Thunderbird without any flaws. Mine fails
> the same way in his Thunderbird and also in a fresh installation.

Well, at least you?ve narrowed the fault down to Thrunderbird.

Are you using TB through a proxy? Do you have a corporate LAN or an anti-virus
that is behaving as a man-in-the-middle (Anything that claims to protect your
web-browsing)?

Have you tried from a different connection? Maybe on a different machine with
?identical? settings?

Usually errors like these indicate you are not getting the secured connection
you think you are.

--
Apple broke AppleScripting signatures in Mail.app, so no random signatures.