test data.

+Sam <@[matrix (smtp)], @[nexus: \[node 12\]]:sroberts@[10].[1]>
+Aliens: Sam <@[matrix (smtp)]: sam@sam>, sroberts@[10].[1];
+lo@hi, Aliens: Sam <@[matrix (smtp)]: sam@sam>, sroberts@[10].[1];
+Aliens: Sam <@[matrix (smtp)]: sam@sam>, sroberts@[10].[1];, hi@lo
+lo@hi, Aliens: Sam <@[matrix (smtp)]: sam@sam>, sroberts@[10].[1];, hi@lo
+Sam <@mail2.uniserve.com:sroberts@uniserve.com>
+< (hey) @ (hey, )smtp1.sympatico.ca, mail2.uniserve.com (hoo!):sroberts@uniserve.com>
+hw@570.com (Hardware Support Account)
+list-ietf-wg-apps-drums@faerber.muc.de (=?ISO-8859-1?Q?Claus_F=E4rber?=)
+<mutt-dev@mutt.org>(mutt #369), guug-bugs-closed@guug.de (#369)
+"'Aernoudt Bottemanne'"	 <Aernoudt.Bottemanne@Informix.com>
+"'Haag, Ullrich - MBDC'" <Ullrich.Haag@MBDC.com>,
+"'Michael C. Ibarra'" <ibarra@hawk.com>, arl@q7.net, Al <arl@q7.net>
+"'Sam Roberts'" <sam@cogent.ca>
+"'paul@pitbull-productions.com'" <paul@pitbull-productions.com>,
+"'sam@cogent.ca'" <sam@cogent.ca>, "'sroberts@uniserve.com'"
+"'sroberts\@certicom\.ca'" <sroberts@certicom.ca>
+"=?iso-8859-1?Q?Juan_Carlos_Marcos_Rodr=EDguez?=" <jcmarcos@datavoicees>
+"Christian Edward Gruber" <christian.edward.gruber@gmx.net>,
+"D. J. Bernstein" <"djb-   "@cr.yp.to>
+"D. J. Bernstein" <djb@cr.yp.to>, drums@cs.utk.edu
+"Dave Sill <de5-drums" <de5-drums@sws5.ctd.ornl.gov>
+"Dave \(work\) Baerg \(E-mail\)" <Dave.Baerg@SUMMedia.com>
+"Demian" <damient@wave.home.com>
+"Detailed Revision/Update of Message Standards" <drums@cs.utk.edu>
+"Fred" <fprog@__nowhere__.users.sourceforge.net>
+"Haag, Ullrich - MBDC" <Ullrich.Haag@MBDC.com>
+"Jacob Palme" <jpalme@dsv.su.se>, <drums@cs.utk.edu>
+"Jakob 'sparky' Kaivo" <jkaivo@elijah.nodomainname.net>
+"Lee R. Copp" <Lee.R.Copp@MichiganScientific.com>
+"Lionel Johnson" <ljohnson**nospam**@sterling1.com>
+"Martin \[Keso\] Keseg" <Martin.Keseg@slovakia.sun.com>
+"]{ristoph" <news2@kristoph.net>
+"fmartens-2000" <fmartens-2000@planet.nl>
+"g'o'tz ohnesorge" <gohnesorge@lh-computertechnik.de>
+"gao jie" <jiegi@public.wh.hb.cn>
+"gnupg-devel@gnupg.org" <gnupg-devel%gnupg.org@f48.n48.z2.fidonet.org>
+"gpg-devel" <gnupg-devel@gnupg.org>
+"jigang" <jigang@jinglun.com.cn>
+"misc@openbsd.org" <misc@openbsd.org>
+"misc@openbsd.org" <misc@openbsd.org>, brian@Awfulhak.org
+"mutt-dev @ mutt . orgThomas Roessler" <roessler@does-not-exist.org>
+"zwk@f36.n480.z2.fidonet.org" <zwk%f36.n480.z2.fidonet.org@f36.n480.z2.fidonet.org>
+'Dan Dall'Acqua' <ddallacqua@noetic.ab.ca>, 'Dave Shyong'
+0xdeadbeef-request@petting-zoo.net
+102023-00406421@cnxt19932218.conexant.com
+218164.24.43@jobcontrolcenter.com
+<0xdeadbeef-request@petting-zoo.net>
+<>
+<Christia.Roberts@nrc.ca>
+<Nick_Shelness@motorcity2.lotus.com>
+<all: >
+<fyi-admin@emyr.net>
+<gary.stefanov@medtronic.com>, <HdeVisse@husky.ca>,
+<gnu-pop-list@nodomainname.net>
+<mutt-dev-owner-sroberts=uniserve.com@ns.gbnet.net>
+=?ISO-8859-1?Q?Kolbj=F8rn_Barmen?= <kolla@nvg.ntnu.no>
+=?ISO-8859-1?Q?Patrik_F=E4ltstr=F6m?= <paf@cisco.com>
+=?ISO-8859-1?Q?Patrik_F=E4ltstr=F6m?= <paf@cisco.com>,
+=?US-ASCII?Q?gary=5Fc?= <gary_c@cunningham-lee.com>
+=?iso-8859-1?Q?Fr=E9d=E9ric_L_=2E_W_=2E?= Meunier <0@pervalidusnet>
+=?iso-8859-1?Q?Fr=E9d=E9ric_L_=2E_W_=2E?= Meunier <0@pervalidusnet>,
+=?iso-8859-1?Q?Fr=E9d=E9ric_L_=2E_W_=2E_Meunier?= <0@pervalidusnet>
+=?iso-8859-1?Q?J=F8rgen_Thomsen?= <jth@postfix.jth.net>
+=?iso-8859-1?Q?Jos=3F_C=2E_Garc=EDa_Sogo?= <jose@jaimedelamo.eu.org>
+=?iso-8859-1?Q?Mikko_H=E4nninen?= <Mikko.Hanninen@dna.fi>
+=?iso-8859-1?Q?Mikko_H=E4nninen?= <Mikko.Hanninen@iki.fi>
+=?iso-8859-1?Q?R=E9mi_Guyomarch?= <rguyom@321.net>
+=?iso-8859-1?Q?Ulf_M=F6ller?= <ulf@fitug.de>
+ANDREW MARTIN <amartin@ee.ryerson.ca>
+Abhay Ghaisas <abhay@sobolev.does-not-exist.org>, mutt-dev@mutt.org
+Brian Salter-Duke <b_duke@lacebark.ntu.edu.au>
+Catharine Shyong <shyong@t-iii.com>
+DRUMS-Last-Call:;
+Detailed Revision/Update of Message Standards <drums@cs.utk.edu>
+Eric Allman <eric+ietf@Sendmail.ORG>
+Gary <Gary@e-c-s-uk.com>
+IETF working group on revision of mail standards <drums@cs.utk.edu>
+IETF-Announce:;
+IETF-Announce:;, drums@cs.utk.edu
+Jean-Baptiste Marchand <Jean-Baptiste.Marchand@epita.fr>
+Jonathan Rozes <jrozes+969649116.89117462@vinton.com>
+Jose "C." Garcia Sogo<jose@jaimedelamo.eu.org>
+Marco d'Itri <md@Linux.IT>
+No_Reply-To@mapquest.com
+OSULLIE@rte.ie, skidswam@hotmail.com, boot
+Paul Hoffman / IMC <phoffman@imc.org>
+Sam
+Sam Roberts <sam@cogent.ca>
+Sam_Roberts/Certicom%Certicom@certicom.com
+Thomas Roessler <roessler@does-not-exist.org>, 490@bugs.guug.de
+Thomas Roessler <roessler@does-not-exist.org>, g10@gnupg.org
+ddickey@ip-12-22-50-150.hqglobal.net
+ktb <x.y.f@home.com>
+mcaustin@eudoramail.com, aposner@usaid.gov, Kieran.O'Leary@anpost.ie,
+rfunk@wks.uts.ohio-state.eduofflinemailer-bounce@dikke.penguin.nl
+root
+srr <sam@localhost>
+whom it may concern: ;;whom.it.may.concern: ;
+whom it may concern: mutt-dev@mutt.org, mutt-users@mutt.org;