[Dovecot] ManageSieve with SSL/TLS only

Hi,

I'm quite new to Dovecot and ManageSieve, so probably I've missed something, although I couldn't find any hints in the wiki. I'm interested in running ManageSieve with SSL/TLS only. So is there any way to reject any non encrypted connections? I couldn't find any parameter for this purpose.

I'm currently using dovecot 1.2.15 provided with Debian Squeeze, but I couldn't find any parameter in the 2.0 branch neither.

Best regards, Karol Babioch