I have 2 mailboxes, different domains, getting the same email over and over again from a bank. I've tried to contact them to figure out the problem. I'm assuming its on their end. Can it be anything on my end, such as greylisting? I don't and can't block their IPs because there are legit emails also coming through.

These are coming from them, its not like I have forwarding setup between 2 account causing a circular issue.

Thanks.