NS not working properly in home server

[azadhussnain]

Hello everyone, i have setup a home server with dedicated line for internet and leased ips. i have installed centos 7 and installed cpanel on it. The server is working fine, i have tried to ping google.com , 8.8.8.8 and a few domains they're pinging correctly. I am able to open cPanel WHM. Everything is working properly but i am facing a few issues. I have created Hostnames in GoDaddy for my domain, my domain is connected to CloudFlare so i also added A records there and pointed my A records to the server IP. The records were pointing fine i have checked with many dns checker websites. Just the issue is when i set those nameservers in any domain then that domain doesn't points to any Ip address. The A record which i created were working fine, they're poiting to the IP address. I have connected another domain to cloudflare and pointed that domain's A record to server ip and that domain is pointing and working properly.

but the domain in which i have setup nameservers doesn't work, it doesn't points to any ip address even nameservers were pointing to the correct ip address. i tried pinging the nameservers and they resolves to correct ip address.

anyone can help me out?

 

[cPRex]

Hey there! I'm wondering if your local network has the correct ports open that are required for the nameserver service to function. From a remote server on a different network, can you run this test?

nmap -sU your.nameserver.com -p 53

That will test to see if UDP packets over port 53 can be accepted on your network. For example, here is the output when querying the cPanel nameservers:

# nmap -sU c.cpanel.net -p 53
Starting Nmap 7.70 ( https://nmap.org ) at 2022-06-13 13:08 EDT
sendto in send_ip_packet_sd: sendto(4, packet, 40, 0, 208.74.121.52, 16) => Operation not permitted
Host is up (0.044s latency).

PORT   STATE SERVICE
53/udp open  domain

Nmap done: 1 IP address (1 host up) scanned in 0.71 seconds

which are the expected results.