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How the blacklist system works


Anyone who thinks they have received spam can file an e-mail complaint with the Mail Abuse Prevention System hotline.

According to MAPS, a staffer investigates each complaint and if the investigator decides that the offending e-mail is spam, MAPS tracks down the company that sent the spam and then negotiates with and tries to educate the company about acceptable e-mail practices. If that doesn't work, the company is blacklisted.

Once an address is listed, all ISPs that subscribe to the RBL automatically filter out traffic from the accused spammer's address space.

According to MAPS, the only way to get off the list is to abide by their policies.

There are many ways to be blacklisted:

  • Sending unsolicited bulk e-mail.

  • Using an opt-out policy instead of an opt-in policy.

  • Leaving an open-relay on your network.

  • Hosting Web pages that are promoted by spam.

  • Providing e-mail drop boxes promoted by spam.

  • Providing banner ads, script processing or hit counters for sites promoted by spam.

  • Providing credit card processing for sites promoted by spam.

  • Providing software for distributing spam.

  • Hosting Web pages for those who provide software for distributing spam.

  • Providing access to lists of e-mail addresses obtained by any other means than opt-in.

    Back to the main feature

  • RELATED LINKS

    Contact Features Writer Suzanne Gaspar

    Other recent articles by Gaspar

    The Spam Police
    Spam accounts for as much as 50% of an ISP's e-mail traffic flow. Read how spam can cause damage and steps you can take to prevent it.

    ISPs and spam police
    Both fight spam, but they don't go about it the same way.

    The spam police force
    Organizations to help you fight spam.

    Q & A with David Rand
    David Rand is a founding member of Mail Abuse Prevention System (MAPS). He sat down with Network World feature writer Sharon Gaudin to talk about battling spam.

    Antispam-related URLs
    Click on these to help you prevent spam.

    Network World's e-mail policy

    Spam rebel with a cause
    Find out if your mail provider is using the RBL services of the cyber-goons at MAPS.
    Network World, 07/02/01.

    ISPs fight spam from the front line
    There is little doubt that you have a grueling job when your business card reads 'senior abuse administrator.'
    Network World, 05/24/01.

    The spam-tastic year 2000
    Unwanted spam gave one e-mail user plenty to complain about in 2000.
    PC World, 01/03/01.


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