to unsubscribe from a mailman list with posting address: sample@example.org send a message w/ subject: unsubscribe to: sample-request@example.org so for the current list, send a mesage to pam-list-request@redhat.com w/ a subject of "unsubscribe" (no quotes), or use the following rfc 2368 url: <mailto:pam-list-request@redhat.com?subject=unsubscribe>