diff --git a/admin_manual/installation/nginx-root.conf.sample b/admin_manual/installation/nginx-root.conf.sample index 99a6da5c1ce..56fd25acf09 100644 --- a/admin_manual/installation/nginx-root.conf.sample +++ b/admin_manual/installation/nginx-root.conf.sample @@ -143,6 +143,10 @@ server { fastcgi_request_buffering off; fastcgi_max_temp_file_size 0; + + # Horde, used by nextcloud mail app, needs $_SERVER['SERVER_NAME'] to generate Message-ID header + # See also: https://github.com/nextcloud/mail/issues/5764 + fastcgi_param SERVER_NAME $host; } location ~ \.(?:css|js|svg|gif|png|jpg|ico|wasm|tflite|map)$ {