Gerenciado para corrigir este. Tive que adicionar o myserver.mydomain.com ao lado do local e padrão .
server {
listen 80 default;
server_name myserver.local myserver.mydomain.com;
access_log /var/log/nginx/myserver.local.access.log combined;
location / {
proxy_pass http://127.0.0.1:8080;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}