Which options are most important to configure?

Q Which options are most important to configure?
General options>Prefix
General options>Description
General options>Send welcome message ...
General options>Send goodbye message ...
General options>Maximum length
General options>Should administrator get notices of subscribes
Non-digest options>Footer
Archiving Options>Archive messages
Archiving Options>public or private
Privacy options...>Sender filters>moderate member postings
Privacy options...>Sender filters>action for non-member postings
Privacy options...>Subscription rules>What steps are required for subscription?
Privacy options...>Spam filters>Spam Filter Rule 1 -- X-Spam-Flag: YES
Last changed by admin on 21 April 2009