FYI you've just posted your email address for everyone to see in this screen shot - these are publicly viewable forums, and this is exactly how you open yourself up to receiving scam correspondence.

How did you receive this message? If eBay sent it, you would be able to view the message by logging into eBay, and looking in 'My Messages' under 'My eBay'.

Does that order ID at the top of the message correspond to a purchase you've made?