Some email scanners use that address. Not to dive too deep here but for years you would see that when the email is scanned by the antivirus.
Bob
Hello, some one I know sent me an email with the IP Address, 127.0.0.1. I did an Arin.net search and it says that it's a IANA Special Use.
What does this mean? Why would he send me an email address with that ip address?

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