mime_state: header_token: message / rfc822
MAIN 0	|content-type: message/rfc822
mime_state: header_token: base64  
MAIN 34	|content-transfer-encoding: base64
HEADER END
mime_state: warning: invalid message/* or multipart/* encoding domain: base64
BODY END
mime_state: warning: improper message/* or multipart/* encoding domain
