[Dovecot] SSL failures on 1.0B3

[Joseph Filla]

I have setup Dovecot 1.0B3, and IMAP works fine, but I cannot get  
IMAPS to work. I've generated the keys with the mkcert script and  
Thunderbird can see and accept the certificate but tosses an error  
just after that.

In my log, I'm getting:
dovecot: Apr 03 19:07:43 Warning: imap-login: SSL_accept() failed:  
error:140D308A:SSL routines:TLS1_SETUP_KEY_BLOCK:cipher or hash  
unavailable [x.x.x.x]
dovecot: Apr 03 19:07:43 Info: imap-login: Disconnected: rip=x.x.x.x,  
lip=x.x.x.x, TLS

Can anyone give me a tip as to what is the matter? I don't understand  
these ssl errors,

Thanks,

--
Joe