>I don't divulge any of the email contents...
That's a good strategy, at least while you aren't sure whether it is, or isn't, spam.
Let's just say that if you receive an e-mail from an unknown person, you should always be wary. As indeed you seem to be.
There is not a single last name "Magnum", so there is every reason to be wary (depending on the specific claims in the e-mail).
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)