We had a problem receiving email for the CS.Berkeley.EDU domain last night and earlier today. All email for that domain should be automatically re-sent; however, the senders may have received a 4 hour notice (“Your message could not be delivered for 4 hours”). There is nothing you or the senders need to do. Most likely by the time you see this announcement, you will have received all the mail from last night. We apologize for the inconvenience.