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Choosing a Good DNSBL

Posted by CmdrTaco on from the can-it-filter-all-pr-firms dept.

stry_cat submitted a story about selecting a good DNSBL. It talks about some of the problems with DNS blacklists and the sorts of things that you should be looking for. Things like Speed, Selection Criteria, and Goals make the list. And of course not requiring payment to be removed from the blacklist.

1 of 152 comments (clear)

  1. Re:NEVER use a DNSBL as an absolute block by Shaman · · Score: 4, Insightful

    Sounds good, except it's not true. I was just on one of our spam systems (Barracuda 400) and the stats look something like this:

    20,000,000 blocked e-mails
    480,000 tagged e-mails
    90,000 viruses found
    135,000 quarantined messages (user choice to quarantine or not)
    610,000 delivered/approved mail

    To nobody's surprise, some spam is still getting through. This is in less than two weeks, and there are two servers to handle the load, the other one is more or less as bad.

    So what were you saying about not using blacklists?

    --
    ...Steve