Verifying Email Signature Using Cdosys And Capicom?

I'm experiencing a problem while trying to verify an email signature that has sent from outlook 2007 and has been sign & encrypted. I receive this email on the other side (not outlook client) as a mime message (eml file). I have opened the eml file using ADODB stream into CDO.Message object. Now, i'm successfully managed to decrypt the message using CAPICOM object. but when i'm trying to verify the signature i get "incorrect hash" and the process fails.

I have to mention that i'm using as a base code the example from microsoft SDK for CAPICOM. I have discovered that if i sign & encrypt a message using that code example, i can (without any problem) decrypt and verify this email file. but when i'm trying to verify the signature of an email sent from outlook client there is a problem (like i mentioned in the beginning). I have also discovered that the content of the email is encode in UUEncode format. i have managed to decode the UUEncode format using BodyPart.GetDecodedContentStream but whats weird is that something goes wrong during that decode process i know that because on the code example we are trying to find:

BodyPart.GetFieldParameter("urn:schemas:mailheader:content-type", "boundary")

but i get an error message because this parameter cannot be found in the BodyPart. when i'm trying to read the text stream:

GetStream.ReadText

i seeing this weird thing... there are some binary characters that disturbing (apparently) to the function to find this parameter. here is the string:

Thread-Index: Acq1GI5RkfMs/4oXTO6yNp+vV7gabQ==
Content-Class: urn:content-classes:message
Importance: normal

[code]....