Mail proxy with SNI

[Jonathan Matthews]

A cheaper, non-commercially-viable option (which might be acceptable
as you indicate it's not a professional project) would just be to put
different domains' certs on different ports. A slight one-time setup
annoyance to the users, of course, but they shouldn't care if you're
doing it for free. Maybe.

-- 
Jonathan Matthews
Oxford, London, UK
http://www.jpluscplusm.com/contact.html