Basically same thing happened to me, except it was my teacher and some angry IT guy that gave me a ribbing, principal called him.

> "it's Evan" (yes, I put my name)

I just sent 'test' and I think it shows IP or computer name, but it didn't really matter, I had to confess when they asked the class who did it.

'net' has so much stuff crammed into it though, it's unbelievable. Feels like a skeleton key that just barely follows rules.