Hostname/IP doesn't match certificate's altname

[Givemeyourgits]

I get this error when using forced https with only IP and self-signed certificates. I am using "Require Security" option for both plex servers and using the default self-signed certificate.

[alneven]

I have this as well...
Ubuntu 16.04, lestencrypt+nginx+subdomain plex.example.com as address (port 32400 and remote access in plex web are still active)

If I try to sync with the IP, I have "failed, reason: socket hang up" error...

[alneven]

in Plex / Server / Network -- Secure connection has to be changed at me to "preferred"

[Givemeyourgits]

Yes, that works for me as well but I keep it on Required.

[RyanWor]

I have found that I can leave SSL required and still make plex-sync work by creating entries in my hosts file that match the servers IP to the common name in the Plex assigned SSL certificate.

[Kolmain]

I'm getting this error even with secure connections set to "preferred", any ideas?