SecureBlackbox Knowledge Base

Recent MIME Articles


If I specify the headers for DomainSigner, the message can't be validated by Yahoo. Why?

The headers should be specified in the same order, as they are placed in the message. Otherwise some validators will fail.…

Signed message with attachment, when processed by Microsoft Exchange, is reported as containing an invalid signature. The integrity of the message is supposed not to be broken. What's wrong?

Microsoft Exchange 2007 contains a bug that causes it to invalidate the signatures made over the documents containing file attachments. The details are available…