mailu/core/nginx/conf
Florent Daigniere 55c1e55529 Same for front-smtp
This should enable postfix to have visibility on TLS usage and fix the
following: 
..
dhparam.pem Switch to ffdhe3072 to enable RFC 7919
nginx.conf Same for front-smtp
proxy.conf Document REAL_IP_HEADER and REAL_IP_FROM
tls.conf Update tls.conf