It's the same for _all_ mailman mailing lists, let alone that nearly all MUAs provide mailing list features, so you even don't need to take a look at mailing list mail's headers. The address to unsubscribe is _not_ jack-devel(a)lists.jackaudio.org it is jack-devel-request(a)lists.jackaudio.org ^^^^^^^^ ^^^^^^^^ Hth, Ralf