‘(^(Mailing-List : |Precedence :.*(junk |bulk |list) |To : Multiple recipients of |(((Resent-)?(From |Sender) |X-Envelope-From) : |>?From )([^>]*[^(.%@a-z0-9])?(Post(ma?(st(e?r)? |n) |office) |(send)?Mail(er)? |daemon |m(mdf |ajordomo) |n?uucp |LIST(SERV |proc) |NETSERV |o(wner |ps) |r(e(quest |sponse) |oot) |b(ounce |bs\.smtp) |echo |mirror |s(erv(ices? |er) |mtp(error)? |ystem) |A(dmin(istrator)? |MMGR |utoanswer))(([^).! :a-z0-9][-_a-z0-9]*)?[%@>\t ][^<)]*(\(.*\).*)?)?$([^>] |$)))’