Archive for the ‘dns’ Category

Add SPF record for your email relay server to avoid being counted as a spam

Posted on November 22, 2017, 1:28 pm, by admin, under dns, mail.

Step 1. Add SPF record to your DNS server Create TXT record type and add the following text without quotes “” @ TXT "v=spf1 a mx include:myrelay.com ~all" Step 2. Check if SPF record is added correctly username@laptop:/home/username# dig myhostname.com TXT   <<>> DiG 9.10.3-P4-Ubuntu <<>> myhostname.com TXT ;; global options: +cmd ;; Got answer: […]

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Fiding domain hosting from root servers

Posted on December 9, 2015, 1:19 pm, by admin, under dns.

Step 1: dig +norec @a.root-servers.net. yourdomain.com Result: Returns list of webservers where more information available. one of them for example is localwebserver.com Step 2: dig +norec @localwebserver.com. yourdomain.com

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Posted on July 5, 2015, 4:16 am, by admin, under dns, lists.

Free DNS Servers List 208.67.220.220 67.138.54.100 207.225.209.66

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