Labels:chat room | hakham | monitor OCR: 404 SECTION CHAPTER 7 Yahoo! and EarthL ink use authentication techniques to filter out e-mail with forged origination address. Can avoid spam? A spam filter is a type of utility software that cap- tures unsolicited e-mail messages before they reach your Inbox. It works by checking the text e-mail headers and messages against series of rules For example, rule such as The message header contains viagra, v1agra, v.a. .gra Or vi@gra would help identify spam that's trying to hawk cheap pharmaceuticals Spam filters are available as standalone software often are included in e-mail clients and security suites. Most spam filters are shipped with set of basic rules used to identify spam. The rules can be updated by downloads from the software publisher's Web site Some spam filters also allow con- F ...
