[RollAHardSix]

Did you check SPF, DKIM, DMARC?

I worked for a strategic marketing consultancy & I couldn't tell you the number of times I saw the above properly misconfigured for clients or government tourism entities. Like 90‰ of what I ran into.. luckily for them configuring SPF, DKIM, & DMARC is like the one thing I'm actually good at in this computer career thing

[Jupe]

I emailed the sender, and will follow up with this info. Thanks!