The Listname-Unsubscribe Command Address
It is often simpler to tell your users to use the Command-Listname address to leave a mailing list. For instance, people can leave a mailing list called "jazztalk" by sending email to
jazztalk-off@clio.lyris.net
All the different aliases (uns, unsubscribe, unsub, unsubscribe, signoff, leave, remove, off) can be used, and the Listname-Command@ order can be reversed, as in:
unsubscribe-jazztalk@clio.lyris.net
All these ways of leaving a mailing list is equivalent. It is up to you which method you decide to tell your users to use. There is no “Best Way”, just a way that you are most comfortable with.