I have a website running on Ubuntu 18.10 and apache 2.4 with SSL certificate registred using Letsencrypt and my DNS record is properly configured for my domain (www.shaheer.ga) on my hosting DNS Management section.
two days ago, my ISP has changed the default DNS Server to ClouDNS (10.20.30.40).
After this, my website stop working on default settings and now it will need user to change his default DNS to another DNS such as (8.8.8.8 or 1.1.1.1). If the user does this my website will start to work again.
This issue is appear in two error messages :
1- On Chrome (Android) : This site can't be reached ERR_CONNECTION_REFUED
2- On Chrome (Windows) : This site can’t be reached DNS_PROBE_FINISHED_NXDOMAIN
nslookup -debug command shows:
C:\Users\Alaa>nslookup -debug shaheer.ga
------------
Got answer:
HEADER:
opcode = QUERY, id = 1, rcode = NXDOMAIN
header flags: response, auth. answer, want recursion, recursion avail.
questions = 1, answers = 0, authority records = 1, additional = 0
QUESTIONS:
40.30.20.10.in-addr.arpa, type = PTR, class = IN
AUTHORITY RECORDS:
-> 10.IN-ADDR.ARPA
ttl = 86400 (1 day)
primary name server = 10.IN-ADDR.ARPA
responsible mail addr = (root)
serial = 0
refresh = 28800 (8 hours)
retry = 7200 (2 hours)
expire = 604800 (7 days)
default TTL = 86400 (1 day)
------------
Server: UnKnown
Address: 10.20.30.40
DNS request timed out.
timeout was 2 seconds.
timeout (2 secs)
DNS request timed out.
timeout was 2 seconds.
timeout (2 secs)
DNS request timed out.
timeout was 2 seconds.
timeout (2 secs)
DNS request timed out.
timeout was 2 seconds.
timeout (2 secs)
*** Request to UnKnown timed-out
I already tries to create a DNS Zone for my domain on ClouDNS but this didn't help
Do you have any Idea why this is happening?
Thanks.
