Someone named/using “[email protected]” from IP 220.127.116.11 (Brazil) is spamming random emails addresses claiming to be “Adafruit support” – this is a pretty common spam/scam tactic (called Phishing). Usually we get these from “Chase Bank” and “Amazon” – and now we see an Adafruit one, we must be popular! Anyway, be advised and vigilant. Adafruit does not spam, harvest or email customers, ever. We sent a note to the company with SMTP server/user (may be forged headers or zombie computer) they emailed back and they’re looking in to it now.
If you google for the IP you can see the following:
The Project Honey Pot system has detected behavior from the IP address 18.104.22.168 that is consistent with that of a Mail Server and Dictionary Attacker.
Update: Jon from realise.com says:
Looks like spoofed headers, rather than compromise of our mail servers, as the origin of the email is not one of our systems. As you can probably imagine, there’s not a lot we can do about this. Unfortunate, but hopefully it’s a one off.