Use dig for footprinting. Domain Name Server or we can say Domain… | by Daniel Webimprints | Medium
Filtering specific DNS operations
How can I set up MX records required for mail service? - Domains - Namecheap.com
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Decoding dig output: +norecurse @nameserver MX to domain - Stack Overflow
How to Understand and Modify MX Records - Liquid Web
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Dig Command in Linux (DNS Lookup) | Linuxize
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Dig after an office hosted MX record - Microsoft Community
How to Use Linux dig Command (DNS Lookup) {With Examples}
dig (command) - Wikipedia
Linux / Unix: Dig Command Find Out TTL (Time to Live) Value For DNS Records - nixCraft
dig Command in Linux with Examples - GeeksforGeeks
How to Use Linux dig Command (DNS Lookup) {With Examples}
Solved Dig (domain information groper) query DNS related | Chegg.com
dig Befehl | Linux Deutsch#
Resolving Domain Names with dig Command on Linux
