What type of files does the Spam filter block?
The spam filter is currently set to block files with the extensions .pif, .scr, .vbs, .zip. These type of files are the most commonly used for viruses. The recommended method for receiving these type of files is to have the sender rename the file from file.zip ti file.zip.old. When you receive the file you would need to rename it from file.zip.old back to file.zip.