Nowadays, spam is more than just an irritating flood unwanted email. It is also a means by which spammers can transmit viruses, spyware and adware to your computer. An anti-spam filter is essential to minimizing this potential risk. It will also stem the flow of spam into your inbox.
What is an anti-spam filter?
An anti-spam filter is a program designed to detect and block unsolicited bulk email. It works by scanning any incoming email for words, phrases, html code and other spammer tactics to determine whether an email is spam or not. It does this based on probability formulas that calculate the likelihood that an email that has certain words is spam.
It will also create black lists and white lists. The blacklist will store email from unknown ISP and email addresses or ISP addresses; the whitelist will hold email that is sent from pre-approved sources. The filter software will also keep these lists up to date. Whenever the filter detects that an incoming email is spam, its address is added to the blacklist. Whenever the sender or recipient confirms an email as trusted and legitimate, it will be added to the white list. Most of the “sporm” (spam pornography) will be filtered out as well as any email that it detects has adult content.
