It is a testament to the longevity of this group that we are still using Mailman as our mailing list software. Mailman's last major revision was in 2012, and it really shows it. Most specifically, it has not kept up with modern anti-spam mail conventions, so the way it handles headers and addresses gets a lot of legit messages marked as spam, as we saw this weekend.
So, it's time. I've created a new Google Group,
berkeley-u...@googlegroups.com, and moved over all of our existing subscribers. Things may look a little different but they should work better.
Let me know if you notice any issues.