Update mail.conf

sites/mail.conf

@@ -2,7 +2,6 @@ server {
 	listen 443 ssl http2;
 	server_name mail.tronnet.net;
 	include /etc/nginx/snippets/ssl-acme.conf;
-	include /etc/nginx/snippets/error-pages.conf;
 	location / {
 		proxy_pass https://mail.dmz;
 		proxy_redirect default;