Am 11.07.10 14:35, schrieb Stan Hoeppner:

Leander S. put forth on 7/11/2010 7:26 AM:

...

Hi,

since I upgraded to the new Thunderbird version 3.1 I can't establish a TLS/SSL connection anymore. But before the update Thunerbird was able to establish an encrypted session ...

Maillog shows me the following now:

server dovecot: imap-login: Disconnected (no auth attempts): rip=84.157.133.248, lip=192.168.1.100, TLS handshaking: SSL_accept() failed: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca

Why is the CA unknowen - all of a sudden - ?! http://lmgtfy.com/?q=tlsv1+alert+unknown+ca+

Thanks a lot for the sarcastic google hint (even I had to smile) - but I'm not living behind the moon plus I wouldn't bother asking if I would find hints somwhere else ;) Dovecot's SSL/TLS capability is configured as told by: http://wiki.dovecot.org/SSL/CertificateCreation PLUS it uses to run without any issues on other MTAs. There is something else missed - I just don't get it ;/

Best Regards

Am 11.07.10 15:59, schrieb Stan Hoeppner:

Leander S. put forth on 7/11/2010 8:24 AM:

...

There is something else missed - I just don't get it ;/ The solution to your problem, or at least information pointing you in the right direction, is in those Google search results, if you'd bother to actually read some of them. I guess you'd rather wait for someone here to solve the problem for you instead of spending that time solving it yourself?

Hi Stan,

you most probably think I'm just too lazy & impationed to google my problems - but it's not. I more and more get the feeling that this is ether a Thunderbird incompatibly or a little switch which is missed in the dovecot.conf to get compatible - but I'm not getting it. I set up Dovecot SSL/TLS & Postfix SSL/TLS for several times succesfully now ... and now oll of a sudden it stops working with Thunderbird version 3.1 ?!

Out of my frustration I was even using http://dovecot.org/doc/mkcert.sh to create the neccesarry files - but with the same result ;(

Therefore I would really more then appreciate a hepful hint if possible

• cause I'm really stucking at a point where I'm not getting to anything anymore.

Here are three screenshots of the Thunderbird situation - even though it's in german - I think everybody knows how it looks in english isnce it's a common dialog.

*IMAP:* http://hald-bau-gmbh.de/Screenshots-Debianforum/public_143.png http://hald-bau-gmbh.de/Screenshots-Debianforum/Local_143.png

*SMTP:* http://hald-bau-gmbh.de/Screenshots-Debianforum/public_25.png Local: same as public - works

And here again the mailog output:

server dovecot: imap-login: Disconnected (no auth attempts): rip=84.157.133.248, lip=192.168.1.100, TLS handshaking: SSL_accept() failed: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca

It's always the same when it fails ...

And this is how my dovecot.conf looks like:

[...]

|## ## SSL settings ## ssl = yes ssl_cert_file = /etc/ssl/mail/mail.cert ssl_key_file = /etc/ssl/mail/mail.key|

[...]

Thank you