I love the way you all leap to the conclusion that he's just clicking on anything, he may have been expecting the link to be mailed to him. Or you may be right of course.
Hamilton 22 if you are certain that it's genuine then try copying and pasting into a browser and see it it completes that way. If you are unsure then try googleing the link and see what it comes up with.
Other than that, what the others said.