problem on TLS libs

[digitalphoto]

hello,

after an upgrade to 2.0.3, postfix log gives the following message:
<snip>
warning: TLS library problem
</snip>
kontact smtp configuration doesn't accept encryption any longer. actually, it 
only sends messages without encryption right now.
any hints if this might be a client or server problem? any tip on configuring 
ssl/tls on kolab?

tia,

jose karma