The mod team has received a few messages concerning this user and the messages.
If you have received such a message, please report it to the admins (we recommend ‘spam’). You can contact the admins here, or by following the instructions here. We are aware of the user sending the messages (who as of this posting has not interacted in r/Judaism), and a few of the mods have received their PMs – I was fortunate to receive two messages!!