It has always been our policy to block and quarantine emails that contain Windows executables in order to help prevent email viruses, or worms, from propagating through the fox.phoenix.az.us domain. The recommended method of emailing executables has been to archive/compress them and send the zip file instead.
Unfortunately, this is no longer acceptable. Email viruses are making increasing use of compressed (zip) files to spread themselves across the Internet. Until further notice, emails bearing zip files will now also be blocked.