Comment by jdnordy

I received the same email, just from a different domain:

ARC-Authentication-Results: i=2; mx.google.com; dkim=pass [email protected] header.s=jb54 header.b="l0E4c/Ut"; dkim=pass [email protected] header.s=20210112 header.b=xGMHx3cn; arc=pass (i=1 spf=pass spfdomain=scoutcamp.bounces.google.com dkim=pass dkdomain=youtube.com dmarc=pass fromdomain=youtube.com); spf=pass (google.com: domain of [email protected] designates 2a01:7c8:aab3:2dc::8 as permitted sender) [email protected]; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=youtube.com Return-Path: <[email protected]> Received: from 8j.seiroowebizexpo.com (8j.seiroowebizexpo.com. [2a01:7c8:aab3:2dc::8])