TLS handshake: Bad certificate - how to solve?
Hi, I try to access my email on IMAP mail server running Dovecot v126.96.36.199. It works just fine with any other email client I have tried such as Outlook, Bluemail, Claws, ...
However, when accessing the my email through Thunderbird, it just says "Connecting to... " in the bottom status bar and nothing ever happens - I do not get an error message or any other kind of status update.
In dovecot's mail.log I get these error messages though:
Nov 21 07:55:21 hostxyz dovecot: master: Dovecot v188.8.131.52 (3c910f64b) starting up for imap (core dumps disabled) Nov 21 08:03:46 hostxyz dovecot: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=10.0.0.2, lip=192.168.0.120, TLS handshaking: SSL_accept() failed: error:14094412:SSL routines:ssl3_read_bytes:sslv3 alert bad certificate: SSL alert number 42, session=<Kt6V8kfRD4EKAAAC>
Note that there is a valid non-self-signed server side certificate installed on the mail server. As I don't have a problem accessing email through other clients I assume that something is wrong with my configuration of Thunderbird. Could you please highlight how to configure Thunderbird to make it work again?
Alle Antworten (1)
Hallo, may be you have to import the servers certificate into your Thunderbird or you have to declare an exception. Options -> Safety -> Certificates