We cannot update our organizational logo through our DNS at gis.domain.com but we can do through the internal machine name. But when we update the logo through a machine name, portal looks for it at the machine name address, not the DNS.
Whenever I try to upload through the gis.domain.com, portal pops up saying Unable to update logo. Looking through the firefox network logs, I see an error 403 "You do not have permissions to access this resource or perform this operation." We think this issue may be a larger issue than just being able to upload a logo.
I don't see any issues in our logs for apache or tomcat. We have a reverse proxy set up and are looking through our settings and Esri documentation to see if we are missing something, but nothing obvious is showing up.
Edit 1: I noticed that when updating the Shared Theme logo, we can upload a logo with no issues. It hits the https://gis.domain.com/portal/sharing/rest/portals/self/update and successfully updates. But when I try to do it for the Organization Profile logo, it fails with the same rest end point at https://gis.domain.com/portal/sharing/rest/portals/self/update
