I switched SMTP SSL option to required and it seems that gwia is OK with that. I wanted to force users to use secure connection when sending emails via external client (mobile phone, thunderbird, outlook).
The problem is that gwia still accepts not encrypted connections (from thunderbird for example). Is it proper behavior, bug in gwia or I miss something? It is hard to sleep well when I know my users can send thier password with plain text.
Thanks for help