The attached file (produced by an over-zealous email client, but that's another story) has the following content: MIME-Version: 1.0 Content-Type: application/octet-stream Content-Transfer-Encoding: base64 Balsa sees this text/x-vdhl whatever that is. I would think that Balsa should be able to decode it, or, at very least give a better diagnostic.
--- Begin Message ---
- From: root <root localhost localdomain>
- To: root localhost localdomain
- Subject: rkhunter Daily Run
- Date: Fri, 12 Dec 2008 07:37:50 -0800
Attachment: binaX8VnWnrzs.bin
Description: Binary data
--- End Message ---