Thanks for the plug. The same developer at EFF is working on both STARTTLS Everywhere and Certbot Postfix integration. :-) (Anyway, the most significant differ

Thanks for the plug. The same developer at EFF is working on both STARTTLS Everywhere and Certbot Postfix integration. :-) (Anyway, the most significant difference between the two is that STARTTLS Everywhere can also enforce certificate validation on recipient sites that request it, which Postfix won't otherwise do.)