To: recipient@testcertificates.gov
From: sender@testcertificates.gov
Subject: Valid keyUsage Not Critical Test3
MIME-Version: 1.0
Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg="sha-256"; boundary="----1C89579257E5C8FBF5B0A8EFAA9BE926"

This is an S/MIME signed message

------1C89579257E5C8FBF5B0A8EFAA9BE926
Content-Type: text/plain

This is a sample signed message.

------1C89579257E5C8FBF5B0A8EFAA9BE926
Content-Type: application/pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"

[encoded data, 4485 characters]
nxT/Erm39Q4kk8Qd1euAqkyDgKBinLBgSm80JwlDQis96HUeutBiQA==

------1C89579257E5C8FBF5B0A8EFAA9BE926--

