To: test@example.com
From: test@example.com
Subject: Certified
Date: Mon, 2 Oct 2017 12:13:43 +0200
Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg="sha1"; boundary="----258A05BDE519DE69AAE8D59024C32F5E"

This is an S/MIME signed message

------258A05BDE519DE69AAE8D59024C32F5E
Content-Type: multipart/mixed; boundary="----------=_1506939223-24530-42"
Content-Transfer-Encoding: binary

------------=_1506939223-24530-42
Content-Type: multipart/alternative;
 boundary="----------=_1506939223-24530-43"
Content-Transfer-Encoding: binary

------------=_1506939223-24530-43
Content-Type: text/plain; charset="iso-8859-1"
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

Signed

------------=_1506939223-24530-43
Content-Type: text/html; charset="iso-8859-1"
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

<html><body>Signed</body></html>

------------=_1506939223-24530-43--

------------=_1506939223-24530-42
Content-Type: application/xml; name="data.xml"
Content-Disposition: inline; filename="data.xml"
Content-Transfer-Encoding: base64

PHhtbC8+

------------=_1506939223-24530-42
Content-Type: message/rfc822; name="postacert.eml"
Content-Disposition: inline; filename="postacert.eml"
Content-Transfer-Encoding: 7bit

To: test@example.com
From: test@example.com
Subject: test-subject
Date: Mon, 2 Oct 2017 12:13:50 +0200
Content-Type: text/plain; charset=iso-8859-15; format=flowed
Content-Transfer-Encoding: 7bit

test-content

------------=_1506939223-24530-42--

------258A05BDE519DE69AAE8D59024C32F5E
Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"

MQ==

------258A05BDE519DE69AAE8D59024C32F5E--

