CAPICOM EnvelopedData Troubles

[Jonathan W. Zaleski]

I am trying to use the CAPICOM Package to Send Secure Emails, however, I am
having a bit of trouble in getting it to work. I am able to get the proper
certificate, and seemingly encode the 'EnvelopedData' correctly, but when
attempting to open the sent message in Outlook I receive a: "Can't open this
item. Your Digital ID name can not be found by the underlying security
system." Error. I am unsure what this means exactly as it is not something I
was able to query with helpful results on Google, so I was wondering if
someone else had this issue, and knew how to resolve it.

If anyone has a good example of this process in action I would very much
appreciate a good example, so that I can perhaps see my error(s).

NOTE: I was able to Encrypt and send Messages using ChilkatDotNet so I would
assume i'm just overlooking some step of the process.

Since I find it very likely I'm doing something incorrect somewhere along
the encryption process, I have attached my source below. Any help would be
greatly appreciated:
//CLASS VARIABLES

static private String _currStoreName = "My";
static StoreClass _oCurrStore;

private System.Web.Mail .MailMessage theMessage;

private Certificates oCerts;
private Certificate oCert;

private EnvelopedData encryptedMessag e;
//SOURCE CODE

private void btnSubmit_Click (object sender, System.EventArg s e)
{

_oCurrStore = new StoreClass();
_oCurrStore.Ope n(CAPICOM_STORE _LOCATION.CAPIC OM_CURRENT_USER _STORE,
_currStoreName, CAPICOM_STORE_O PEN_MODE.CAPICO M_STORE_OPEN_EX ISTING_ONLY |
CAPICOM_STORE_O PEN_MODE.CAPICO M_STORE_OPEN_MA XIMUM_ALLOWED);

oCerts = (Certificates)_ oCurrStore.Cert ificates;

foreach(Certifi cate cert in oCerts)
{
oCert = cert;
}

theMessage = new System.Web.Mail .MailMessage();

theMessage.To = "jz******@dovet ailinternet.com ";
theMessage.From = "jz******@dovet ailinternet.com ";
theMessage.Subj ect = "This is the Subject";

encryptedMessag e = new EnvelopedData() ;
encryptedMessag e.Content = "Hello World!";
encryptedMessag e.Recipients.Ad d(oCert);

Response.Write( "<B>Subject Email Name: </B>" +
oCert.GetInfo(C APICOM.CAPICOM_ CERT_INFO_TYPE. CAPICOM_CERT_IN FO_SUBJECT_EMAI L_NAME) + "<BR>");

string smimeMessage =
encryptedMessag e.Encrypt(CAPIC OM.CAPICOM_ENCO DING_TYPE.CAPIC OM_ENCODE_BASE6 4);

StreamWriter outStream = new StreamWriter("C :\\DEV\\smime.p 7m", false);
outStream.Write Line(smimeMessa ge);
outStream.Close ();

theMessage.Atta chments.Add(new
System.Web.Mail .MailAttachment ("C:\\DEV\\smim e.p7m"));

theMessage.Head ers.Add("Conten t-Type",
"applicatio n/x-pkcs7-mime;smime-type=enveloped-data;");
//theMessage.Head ers.Add("Conten t-Transfer-Encoding", "base64");
theMessage.Head ers.Remove("Con tent-Class");

System.Web.Mail .SmtpMail.SmtpS erver = "mail.dovetaili nternet.com";
System.Web.Mail .SmtpMail.Send( theMessage);

File.Delete("C: \\DEV\\smime.p7 m");
}