We have multiple DNS registered and proxied.
Everything works great except for one entry.
Sometimes requests hangs forever. It seems that it works only on specific time intervals.
This started to happened today.
Direct access to the machine is made properly.
We already tried DNS Only, Development Mode, Purge Cache and Disable Apps, Disable Perfomance, Disable Security, Cache Level Bypass for this entry, but nothing works.
These are the response headers, when it works:
Thu, 29 Jul 2021 22:12:29 GMT