Even if I try to see their point of view, there are some logical flaws here. One, "_SRJC" could mean anything, and they can't claim a right to every imaginable

Even if I try to see their point of view, there are some logical flaws here. One, "_SRJC" could mean anything, and they can't claim a right to every imaginable use of the acronym. Two, they seem to think that E-mail is a heck of a lot more secure than it is. They're worried that a sender's address could "look like" something from their University. The reality, apparently not known to them, is that an entire E-mail can be forged, up to the point of appearing to originate from one of their own "legitimate" addresses. So if true E-mail security is their problem, they should first consider not doing important things through E-mail, before filing lawsuits.