Site displays with Curl but not within the browser
For such case please add line in /etc/nsswitch.conf
hosts: files dns mdns4_minimal [NOTFOUND=return] mdns4
to be
hosts: dns files mdns4_minimal [NOTFOUND=return] mdns4
For someone reading this in the future:
For me it wasn't a DNS issue but one with https:
curl my-domain.com worked because it used http protocol.
However, modern browsers seem to always attempt to use https nowadays and that's not always obvious.
So for me, setting up letsencrypt and enabling https solved the issue.