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A comment on Check If Email Exists. Parent comment

Re:Check If Email Exists by mattowen_uk on Friday July 02, 2021 @01:02AM (#27707963)
The non-interactive nslookup for Windows invocation:

  nslookup -query=mx evernote.com
Edit: Trying out the macOS/Linux invocation on Windows also works:

  nslookup -q=mx evernote.com
Oddly, the first time I did this, I only got IPv4 results, subsequent queries for the same domain, included IPv6 as well.
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