This is a case where a screen shot of the message would be very helpful (for me, anyway) in determining what it's from and whether it's legitimate or not.

If you can get one and send it I'll take a quick look.
--

Brian - Windows 10 Home, 64-Bit, Version 1803, Build 17134  

    The psychology of adultery has been falsified by conventional morals, which assume, in monogamous countries, that attraction to one person cannot co-exist with a serious affection for another.  Everybody knows that this is untrue. . .

           ~ Bertrand Russell