DNS Theory and Applications

MX Record

Error Message:
DNS Error: 3362926 DNS type 'mx' lookup of lyonscomputer.com.au 
responded with code NOERROR 3362926 
DNS type 'a' lookup of mail.lyonscomputer.com.au. 
responded with code NXDOMAIN 3362926 
DNS type 'aaaa' lookup of mail.lyonscomputer.com.au. responded with code NXDOMAIN

A NXDOMAIN is Non-Existent Domain.
NXDOMAIN is a term used for the Internet domain name that is unable to be 
resolved using the DNS servers or domain name not yet registered. 
NXDOMAIN can also be due to a network or DNS server problem.

How do you use nslookup with MX records?
At the command prompt type "nslookup ".
This will give you a ">" prompt.
Type "set type=MX ".Type "LyonsComputer.com.au ".
You should now get the MX records for "LyonsComputer.com.au ".

https://www.whatsmydns.net/#A/mail.lyonscomputer.com.au

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Glenn Lyons VK4PK
glenn@LyonsComputer.com.au
Ver:gnl20182018 - pre published v0.9