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spam rbl's : which do you use?

Discussion in 'General Discussion' started by jamesbond, May 3, 2003.

  1. jamesbond

    jamesbond Well-Known Member

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    I was wondering what rbl's people are using to fight spam.

    Spamcop seems to cause me some trouble sometimes (blocking legitimate mails) , so I decided to set that to 'warn'.

    Are there any other 'reliable' rbl's I should consider using?

    Right now I have this:

    bl.spamcop.net/warn : \
    relays.ordb.org/reject : \
    sbl.spamhaus.org=127.0.0.2/reject : \
     
  2. H2Hosting.com

    H2Hosting.com Well-Known Member

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    rbl_domains = bl.spamcop.net/reject:\
    blackholes.wirehub.net/reject:\
    dynablock.wirehub.net/warn:\
    dnsbl.njabl.org/reject:\
    list.dsbl.org/reject:\
    multihop.dsbl.org/reject:\
    dun.dnsrbl.net/reject:\
    spam.dnsrbl.net/reject:\
    relays.ordb.org/reject:\
    dialups.relays.osirusoft.com/reject

    + our own list of domains and IPs
     
  3. jamesbond

    jamesbond Well-Known Member

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    That's quite a list :)

    Don't you get complains from customers sometimes about mail not being received?

    Which rbl's would you say are most reliable?
     
  4. andethen

    andethen Member

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    The best way to do it is to call the RBLs through SpamAssassin, then a mail relay being in an RBL just increases the points, doesn't bounce it outright.
     
  5. jamesbond

    jamesbond Well-Known Member

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    I thought SpamAssassin doesn't bounce mails at all.
    Or have you configured it differently somehow?
     
  6. jamesbond

    jamesbond Well-Known Member

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    I do like the fact that multiple rbl's are used together in a scored system such as SpamAssassin, but as I said I don't want the mail to be delivered. And running SpamAssassin on all accounts eats up server resources also.

    The way I have set it up in exim.conf one single hit in one of the rbl's causes the mail not to be delivered.
    It would be nice if we could configure exim to only block e-mails from ip's that are listed in 2 or more rbl's.
     
  7. SageBrian

    SageBrian Well-Known Member

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    I like this idea.
    First, setup a big list of RBLs.
    Then, have exim refuse mail if listed in 3 RBLs.
    If listed in less than 3, add a point to SpamAssassin for each listing in an RBL.
    Setup SA so that any spam score of 15 or more is deleted.

    Ah, to live in a perfect world. :) One can dream, can't they?

    I don't know if it's possible to do yet with the current versions. And I have no idea how to implement such a thing. I'm just good at figuring out what would might work logistically.
     
  8. H2Hosting.com

    H2Hosting.com Well-Known Member

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    They have an option to disable RBL filters per domain or for single pop3 account by request. Sometimes they request RBL back ;)

    We tested a lot filters, so current setup is the best.
     
  9. Bravo

    Bravo Well-Known Member

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    How do you disable RBL filters for a specific domain on a cpanel server?

    BTW, we also use countries.nerd.dk to block China and Korea, this by itself has cut the volume of spam by half.
     
    #9 Bravo, May 27, 2003
    Last edited: May 27, 2003
  10. haze

    haze Well-Known Member

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    You can allow traffic to an entire domain or just singular domains by adding the following under your RBLs:

    recipients_reject_except = *@domain.com : user@domain2.com

    cPanel.net Support Ticket Number:
     
  11. Bravo

    Bravo Well-Known Member

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    Thanks a lot, I was using this for the postmaster address, wasn't sure if it accepted wildcards.

    cPanel.net Support Ticket Number:
     
  12. emeric21

    emeric21 Well-Known Member

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    How i can add it in exim??
    I'am a newbie :)

    Thanks

    cPanel.net Support Ticket Number:
     
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