Spam Software

Spam Software

Spamming is the use of any electronic communications medium to send unsolicited messages in bulk. The most common form of spam is that delivered in e-mail as a form of commercial advertising.

Spammers obtain e-mail addresses by a number of means: harvesting addresses from Usenet postings, DNS listings, or Web pages; guessing common names at known domains. Many spammers utilize programs called web spiders to find email addresses on web pages, although it is possible to fool the web spider by substituting the “@” symbol with another symbol, for example “#”, while posting an email address.

Computer users can avoid e-mail spam in several ways:

* End-users should take precautions to avoid publicising their e-mail addresses
* End-users can use automated e-mail filtering on their own computers
* System administrators can use appropriate tools to trap e-mail spam at the mail server level

Anti-spam programmers have released several tools—intended for both end users and for systems administrators—which automate the highlighting, removal or filtering of e-mail spam by scanning through incoming and outgoing e-mails in search of traits typical of spam. A popular commercial solution in this area is a spam firewall appliance from Barracuda Networks.

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