[Dovecot] Dovecot vs.Clients - strange behaviour, diagnostics sought

[Jeroen Scheerder]

Todd Vierling wrote:

[...]

>>>That's it.  Thunderbird tried to talk ssl to a plain imap service, which
>>>horribly failed.
>>
>>Well, having an IMAPS-only dovecot on port 994 fixed things for Thunderbird,
> 
> 
> Why is it on port 994 -- is that a typo?

No.  I'm testing the water for dovecot deployment, and have set up dovecot 
side by side with another IMAP daemon (so a loaded and active mailstore is 
available).

Thunderbird seems to run fine now; a matter of applying the proper ssl_listen 
to get that port pure SSL, alongside a clear-plus-starttls one.

It looks like Mail.app treats "non-standard" ports differently.  On the 
standard port (993), the "SSL" option seems to do pure SSL; but with another 
port specified, it does clean-plus-starttls (and hence fails horribly, because 
it's talking to a pure SSl service).


Regards, Jeroen.