Add charset

data/conf/nginx/site.conf

@@ -1,6 +1,8 @@
 proxy_cache_path /tmp levels=1:2 keys_zone=sogo:10m inactive=24h  max_size=1g;
 server {
   include /etc/nginx/conf.d/listen.active;
+  charset utf-8;
+  override_charset on;
   ssl on;
   ssl_certificate /etc/ssl/mail/cert.pem;
   ssl_certificate_key /etc/ssl/mail/key.pem;