matrix-docker-ansible-deploy/roles/matrix-server/templates/nginx-conf.d/matrix-synapse.conf.j2

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    server_name {{ hostname_matrix }};

	server_tokens off;
	root /dev/null;

	ssl on;
	ssl_certificate /acmetool-certs/live/{{ hostname_matrix }}/fullchain;
	ssl_certificate_key /acmetool-certs/live/{{ hostname_matrix }}/privkey;
	ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
	ssl_prefer_server_ciphers on;
	ssl_ciphers "EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH";

    location /_matrix {
        proxy_pass http://synapse:8008;
        proxy_set_header X-Forwarded-For $remote_addr;
    }
}