howardmoon wrote:
This is common – as fonzi says, they have sent out spam emails which appear to come from your email domain.
I don’t think there’s anything you can do about it unfortunately, except perhaps set up a rule that removes ‘delivery failure notifications’ to a separate folder so they’re not so annoying.
I’m getting them too. It could be the OTC stock spammer I’ve complained about in other posts. Did you happen to open any of the non-deliverables?
The spammer is trying to create a surge in an OTC stock price then dump it.
The spam emails contain a gif for an OTC stock and they change the gif resolution such that it can bypass many spam filters. The spam email also contains a bunch of unrelated text. I’ve found posts dating back to August. You can click full headers and examine the email IP addresses to see where it originated.