[Dovecot] TLS timeout with Thunderbird

[Jürgen Herz]

Jason Dixon wrote:

>> Terminology.  SSL has several versions: SSLv2, SSLv3, TLSv1.
>> All are considered to be Secure Sockets Layer, with the last one being
>> the most current version.  I think what some folks think of when they
>> hear "TLS" is the more modern way of negotiating an SSL/TLS connection
>> via POP's STLS or IMAP's STARTTLS or SMTP's STARTTLS commands.
>> Whether you use an "SSL" port (e.g. 465, 993, 995) or a non-SSL port
>> (e.g. 25, 587, 143, 110) and negotiate "SSL", you are likely using  
>> TLSv1.
> 
> Thanks for the explanation.  Sounds like Thunderbird's "TLS" setting  
> probably means to try STARTTLS, rather than use TLSv1.

That's true and it's the same for SMTP - and it's not the best possible
I think. If you're interested in what lead to that naming, read through
https://bugzilla.mozilla.org/show_bug.cgi?id=135357 (interesting part in
respect to UI starts around comment 100).

Jürgen