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Thread: RBL effectiveness

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  1. #1
    Join Date
    Mar 2006
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    Default RBL effectiveness

    Following the Zimbra Admin Guide I enabled the RLB's with the following command:

    zmprov mcf zimbraMtaRestriction reject_invalid_hostname zimbraMtaRestriction
    reject_non-fqdn_hostname zimbraMtaRestriction reject_non_fqdn_sender
    zimbraMtaRestriction “reject_rbl_client dnsbl.njabl.org” zimbraMtaRestriction
    “reject_rbl_client opm.blitzed.org” zimbraMtaRestriction “reject_rbl_client
    relays.ordb.org” zimbraMtaRestriction “reject_rbl_client cbl.abuseat.org”
    zimbraMtaRestriction “reject_rbl_client bl.spamcop.net” zimbraMtaRestriction
    “reject_rbl_client dnsbl.sorbs.net”

    How can I tell if these rules are working? Does it log when an incoming email matches an entry?

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
    Join Date
    Sep 2005
    Location
    Vannes, France
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    Default

    Have a look in the logs for rejected messages - /var/log/zimbra.log
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    Join Date
    Jul 2006
    Location
    KL, Malaysia
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    Default

    It is effective. However, it takes a bit of your bandwidth and get your mail processing much slower (esp during peak hrs).

    Been using RBLs before, but not anymore. Bare with the spams first and keep learning Zimbra SA via zmtrainsa. Also manual training also helps! Via online spam db.

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