POST /trading_partner HTTP/1.1
   Host: 10.240.1.2:58101
   User-Agent: AS2 Company Server
   Message-ID: <#as2_company#01#a4260as2_companyout#>
   Date: Thu, 19 Dec 2024 15:04:18 GMT
   Subject: Signed and encrypted message with async MDN request
   Mime-Version: 1.0
   Content-Type: application/pkcs7-mime;
       smime-type=enveloped-data; name=smime.p7m
   Content-Transfer-Encoding: binary
   Content-Disposition: attachment; filename=smime.p7m
   Recipient-Address: 10.240.1.2//
   Disposition-Notification-To: http://10.240.1.2:58201/exchange/as2_company
   Disposition-Notification-Options: signed-receipt-protocol=optional,
        pkcs7-signature; signed-receipt-micalg=optional,sha-256
   Receipt-Delivery-Option: http://10.240.1.2:58201/exchange/as2_company
   AS2-From: as2_company
   AS2-To: "AS2 Test"
   AS2-Version: 1.3
   Connection: close
   Content-Length: 3428

     {omitted binary encrypted data}