Domain that has frame forwarding hosting type shows blank page on Plesk server

Symptoms

• Domain
example.com
that has frame forwarding hosting type and redirects to
anotherdomain.com
shows blank page instead of
anotherdomain.com
content;
• The rendering of page in a <frame>, <iframe> or <object> are not allowed for
anotherdomain.com
website:

  # curl -k -I https://anotherdomain.com
  ...
  X-Frame-Options: DENY

Cause

Rendering of
anotherdomain.com
as a frame is forbidden on remote hosts.

Resolution

To allow the
anotherdomain.com
page be displayed in a frame on the
example.com
add the following directive in the Apache settings on the server where
anotherdomain.com
website is hosted:

Header set X-Frame-Options "ALLOW-FROM http://example.com/"

Check this article for additional information.