anti spam email filter

Anti Spam Email Filter

org: An anti-spam coalition against unsolicited commercial e-mail.
Among the key focus areas for email users are virus-free stability, lower maintenance and upgrade costs, email search capabilities for customized spam surveillance, archive services and anti-spam tools.
A large market for anti-spam software has been created by the demand to stop spam.
And despite the evolution of anti spam software, such as spam filters and spam blockers, the negative effects of spam are still being felt by individuals and businesses alike.
Some anti virus software offers spam and spyware filtering.
On the surface, challenge-response systems look like an effective anti-spam system, but have drawbacks that many anti-spam activists consider unacceptable.
Do a search for anti spam software or spam blocker reviews and you'll find a lot of choices.
Forged Headers: The technique spammers use when they alter the header of an e-mail to avoid anti-spam software.
Although commonly used as an anti-spam system, and available with a number of mail transfer agents, sender verification callout has many of the same problems as challenge-response.
In addition, some domains will accept email to any user id either because the domain has a "catch-all" address or as part of its own anti-spam measures.