One of my lists had 10 addresses from stumail.sunyjefferson.edu added to it
this week, 7 of them within a few minutes of each other.
It looks like they all came through a CCmail gateway within that domain.
I've taken them all off my lists on the theory that this was either a
malicious act on someone's part or some kind of class exercise. One
of them returned numerous encoded posts back to my list with the word
'UNSCRIBE' as the subject, I took that to be a somewhat clueless attempt