DNS failure

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Issues

  1. When I am going to access website using proxy it is displaying template "DNS Lookup for safesqddns.com failed" , all other websites can access properly.
Connectionfailuretemplate.png

Root Causes

  1. Website which are going to access, that FQDN of the website is not correct.
  2. Local DNS server srivce not is running.
  3. The forwader DNS server not able to resolve the query.
  4. If network service is down.

Solution

If FQDN of the website is incorrect you will face DNS failure issue to that particular website while accessing via proxy.So you should have to enter correct FQDN of that particular website.

If FQDN of particular website is correct but local DNS server service is not running still you can face DNS failure issue.So you make sure about local DNS server service is running.

Run below commands to verify DNS server service

nslookup (FQDN of site)

example :

nslookup www.safesquiddns.com

Server:         127.0.0.1
Address:        127.0.0.1#53

Non-authoritative answer:
www.safesquiddns.com       canonical name = safesquiddns.com.
Name:   safesquiddns.com
Address: 164.177.149.146

If the website is not able to resolve

root@dev:~# nslookup www.safesquiddns.com
Server:         127.0.0.1
Address:        127.0.0.1#53

    • server can't find test.safesquiddns.com: NXDOMAIN