To: recipient@testcertificates.gov
From: sender@testcertificates.gov
Subject: Invalid Negative Serial Number Test15
MIME-Version: 1.0
Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg="sha-256"; boundary="----E35F9912B7A984797E9E2D4E623E970C"

This is an S/MIME signed message

------E35F9912B7A984797E9E2D4E623E970C
Content-Type: text/plain

This is a sample signed message.

------E35F9912B7A984797E9E2D4E623E970C
Content-Type: application/pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"

[encoded data, 4550 characters]
CQ+TIMUL8sqSQxfAmqdtmkQ0eGAsFzDq/gz2Wj5tpCVNh/t+p/ou

------E35F9912B7A984797E9E2D4E623E970C--

