RBL Check errors when verifying a domain with nameservers on Cloudfliare
Posted: 21 Mar 2023, 19:46
Every day we receive a message from RBL's checks informing us that no responses were received from some spam checklists.
The content of said message shows us several errors similar to this:
Error: open resolver; https://www.xxxxx/returnc/pub/xxxx.xx.xx.xx
The IP address at the end of the URL is an IP address that belongs to Cloudfliare.
This only happens with 2 of the 3 servers that I manage, in these 3 servers the RBL verification is configured.
The content of said message shows us several errors similar to this:
Error: open resolver; https://www.xxxxx/returnc/pub/xxxx.xx.xx.xx
The IP address at the end of the URL is an IP address that belongs to Cloudfliare.
This only happens with 2 of the 3 servers that I manage, in these 3 servers the RBL verification is configured.