Email Error Messages If you have been directed to this page by an error message # please read the corresponding explaination below. B&B Print Source blocks thousands of emails per day in an effort to control time-wasting SPAM and worms/viruses that could have an adverse effect on our computer systems. This requires a combination of matching rules, IP blacklists from other sources, and outright denial of some attachment file types. While we try to minimize the rejection of emails from our clients, the system will occasionally reject "good" email (commonly called a "false positive") while we fine-tune our policies for the best balance. If you have any questions, concerns, or even rants, please call 503-924-2126. .exe files cannot be emailed to B&B. .exe files are executable programs on Windows and may be harmful. Attached file(s) cannot be emailed to B&B. The extension(s) identify the files as on a list from Microsoft of Windows executable programs. See http://office.microsoft.com/en-us/assistance/HA011402971033.aspx Short host name filter. Email servers are required to identify themselves to another email server with a properly formatted host name. Your (or your internet service provider's) server is in violation of http://www.ietf.org/rfc/rfc2821.txt