Sometimes it’s handy to use a proxy like nginx to forward requests to an internal server. If you do this then you need to set these headers to make Group-Office operate proprly:
- X-Forwarded-Proto : http or https. This is the protocol the proxy server uses.
- X-Forwarded-Host : The hostname of the proxy server.
See for more information: https://linuxize.com/post/nginx-reverse-proxy/