We have been experiencing a massive delay in all the
scala-* mailing lists at EPFL, both the public and private lists. The admins are so worried about open relays, the firewall prevent us from having our lab's admin run the mailing lists on one of our servers. Of course, despite telling the central admins that this is a serious problem, it has just gone from bad to worse. Last week we were seeing delays of about an hour. The past day or two the delay seems to have hit something like at least twelve hours. That means if someone does a Subversion commit, we do not see the commit e-mail for at least twelve hours. The same goes with submissions to the bug tracking system, or even internal queries.
Arguably, it has been good for productivity in some ways.