There are a variety of sipb mailing lists that prospectives, or
members, may be interested in.

  sipb-office@mit.edu: This is the general sipb list. Most sipb
  business it mailed here. You should be subscribed to it by way of
  sipb-prospectives.

  sipb-discussion@mit.edu: A list for long discussion. It exists
  primarily to cut down on the mail sent to sipb-office. Membership is
  open to all sipb members and prospectives.

  sipb@mit.edu: This list serves as the main external contact point
  for sipb. It also get's a fair amount of user questions. If you'd
  like to help answer them, you should pay attention to zephyr as
  people often assert a lock.

  sipb-minutes@mit.edu: The meeting minutes are mailed
  here. Membership is open to all sipb members and prospectives.

  sipb-soc@mit.edu: a social mailing lists, where events are sometimes
  announced. Membership is open to all sipb members and prospectives.

  sipb-jobs@mit.edu: Job and resume related mailings. Membership is
  open to all sipb members and prospectives.

In addition most projects have their own mailing lists.