I am getting an odd notification apparently from hotmail. from: firstname.lastname@example.org to: email@example.com Subject: Report Domain: MYSITE.co.uk Submitter: hotmail.com Report-ID: <firstname.lastname@example.org> Body of email is blank Attachment: hotmail.com!MYSITE.co.uk!1370829600!1370916000.zip These emails are coming through my host server account. They are arriving at the email I use for my XF forum on that domain. I checked to see if email@example.com is one of my members and got no results. But the notification arrives when there is a post on a forum which has a lot of notifications on it - like an announcements forum. Maybe it's nothing to do with XF? But if so I need to know to check further. I googled firstname.lastname@example.org and it does throw up results but it's in geek talk -( the discussion messages use dmarcrep AT microsoft.com. ) Doesn't seem to mention a spam or con email. I'd mark it as spam but worried about my forum notification emails to my members being blacklisted by microsoft.