Decrypt Mime - s/mime Message

[Patrick]

Hi

Does someone know how to decrypt mime messages? Is there a class in .net
that helps with that?

Thanks
Patrick

 

[Patrick]

here a detailed description of my problem

I have a problem with Mime/base64 decoding. Maybe someone can help. I have
an original Text, that I send using outlook. The text is: "This is a
testmail ä ü ö é à è" (without the ")

So on the mailserver I open the message and the body is base64 encoded and
contains
VGhpcyBpcyBhIHRlc3RtYWlsIOQg/CD2IOkg4CDoDQo=

When I now decrypt that with base64 (I use a class in .NET), then I get:
"This is a testmail d | v i ` h" (without the ")

I can't find out, what happened with the special characters like ä/ü ... are
they still encoded in mime? Has someone an algorithm for solving that
problem.