Strange DNS Problem

[Lavien]

Hello, my port 53 is open and my websites on server are running but when I use intodns, I got some errors about DNS A records. I attached my intodns result, netplan yaml file, DNS records and resolvectl result. I don't know what to do. Can you help me?

 

[zEitEr]

Hello,

Your issue was already discussed here Incoming mail problem and LAN connection problem

Either your ISP is blocking TCP/UDP: 53 ports or your hardware is blocking it.

 

[Lavien]

Hello,

Your issue was already discussed here Incoming mail problem and LAN connection problem

Either your ISP is blocking TCP/UDP: 53 ports or your hardware is blocking it.

My ISP was blocking it but it is now open. My web site url works but into dns does not work. I can telnet port 53 and port checker web sites say port 53 is open. So where should I look at this stage do you think? I reinstalled DA without csf and nothing changed so csf is not the issue

 

[zEitEr]

And still no DNS service is available on TCP:53

$ nslookup elektrikakademi.com 95.70.147.170
;; connection timed out; no servers could be reached

even if TCP:53 port is opened:

Host is up (0.052s latency).
Not shown: 985 filtered ports
PORT     STATE  SERVICE
20/tcp   closed ftp-data
21/tcp   open   ftp
22/tcp   open   ssh
25/tcp   open   smtp
53/tcp   open   domain
80/tcp   open   http
110/tcp  open   pop3
143/tcp  open   imap
443/tcp  open   https
465/tcp  open   smtps
587/tcp  open   submission
993/tcp  open   imaps
995/tcp  open   pop3s
2222/tcp open   EtherNet/IP-1
5000/tcp open   upnp

Traffic to TCP:53 is not routed outside the world.