I host websites and email for a living. The presence of an "@" tells the hosting server that you want to login to the server with a username or that you're trying to access/send email. In fact, when people click your link, they get that very warning. I assume you're trying to direct people to http://law.syr.edu, so just edit your URL to show that and omit the rest. Now, if you had your personal page at the syr.edu site, it could be http:/law.syr.edu/thdlewin or http://thdlewin.law.syr.edu. But the link you have up there right now just takes you to the main page and offers up an error message to the clicker because the at sign makes the server think you're either trying to mail something (which should look like this -> mailto://thdlewin@law.syr.edu) or you're trying to login to the server (back door, admin, maintenance, etc).

If you don't care to change it to http://law.syr.edu, I guess I don't really care that much. I was just trying to be helpful and I hope you don't think I'm doing this to be a troll or a jerk or anything.

Happy chipping and stay safe, my friend!