NGINX passthough TLS real IP?

I was wondering if someone could shed some light on the issue im having,

Currently im testing out to TLS pass though to my zimbra server as the SSL has to be in the zimbra server and another wordpress site which also has the SSL

the setup would this this

INTERNET--------NGINX PROXY-------ZIMBRA and ------WORDPRESS SITE

I successfully configured the nginx proxy to TLS passthough but i checked the logs and it seems that not passing the real IP to zimbra or to wordpress

But couldn't figure it out because it wont let me send the proxy headers because im using the TLS passthough

     root@bunker:~# cat /etc/nginx/modules-enabled/passtru.conf
       stream {

        map $ssl_preread_server_name $name {

       wordpress.domain.com wordpress;
        mail.domain.com zimbra;
        default https_default_backend;
    }

    upstream wordpress {
        server 192.168.7.35:443;
    }

    upstream zimbra {
        server 192.168.7.245:443;
    }
log_format basic '$remote_addr [$time_local] '
             '$protocol $status $bytes_sent $bytes_received '
             '$session_time "$upstream_addr" '
             '"$upstream_bytes_sent" "$upstream_bytes_received"
              "$upstream_connect_time"';

access_log /var/log/nginx/access.log basic;
error_log  /var/log/nginx/error.log;

    server {
        listen 443;
        proxy_pass $name;
        proxy_next_upstream on;
        ssl_preread on;
    }
}

You cannot pass through the IP address when you are passing through TLS.

With TLS passthrough, the TCP connection is terminated at the TLS passthrough proxy. This means that the TCP connection is between client and proxy. To reach the destination server, the proxy opens a TCP connection to the actual destination. In this connection, the source IP address is the proxy's IP address.

With HTTP, it is possible to add the original IP address in an HTTP header field. TLS doesn't have any such field. Therefore the only information available for actual destination is the TCP connection's source IP address, which is the proxy server.

Some options to get the IP address:

1. Remove the TLS passthrough proxy and use a separate IP address for each service.
2. Terminate TLS at the proxy server and add HTTP headers with the origin IP address
3. You might be able to use PROXY protocol between this nginx instance and the upstream servers. https://docs.nginx.com/nginx/admin-guide/load-balancer/using-proxy-protocol/ has information related to that.