As we're aware postfix doesn't support SNI (Server Name Indication), which means that if you'd define a certificate, it will be used for all domain names that you have on that server, which could be bad for people not willing to pay big bucks to purchase fancy certificates. Postfix states on their website that they have no plans to implement SNI.
I have my mail server configured with Dovecot and Postfix. I would like to replace postfix with something that supports SNI and compatible with Dovecot (or at least accepts the same username/password database scheme from Dovecot).
Could you please tell me what alternatives to postfix exist that fulfill these conditions (preferably open source).