We are configuring email out for old Plone site. Do Plone 3 support SMTP with SSL? The situation is little unclear whether this is 1) possible out of box 2) possible with (some) add-on 3) not possible
In this case Plone would directly negotiate with SMTP server (like Google’s) instead of using any local MTA on the server.
SSL support came with Python 2.6.
You can hack in the support to Python 2.4 through backporting Python 2.6 by hand.