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Thread: RBls behine the firewall

  1. #1
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    Default RBls behine the firewall

    Hi,

    We are getting very high spams volume, I have few questions regarding RBLS access behind the firewall, i have added the following RSLs in web interface

    dnsbl.njabl.org
    cbl.abuseat.org
    bl.spamcop.net
    zen.spamhaus.org
    relays.mail-abuse.org

    Please let me know which ports should i open to access these RBL sites.
    Thanks
    Mudasar
    www.o2sp.com
    Open Source Solution Provider

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    Default

    Quote Originally Posted by Mudasar View Post
    Please let me know which ports should i open to access these RBL sites.
    You shouldn't need to open any ports if your server can do an internet DNS lookup.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
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    Thanks for your quick reply,

    For outbound traffic we have opened only 53(DNS) and 25(smtp) ports.
    How does it possible that it only 53 port required to access external RBLS.


    MY
    Thanks
    Mudasar
    www.o2sp.com
    Open Source Solution Provider

  4. #4
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by Mudasar View Post
    How does it possible that it only 53 port required to access external RBLS. :confused
    There's plenty of details here: +rbl +dns - Yahoo! Search Results
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
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    There is information but not i am looking for.
    I am still still able to find the ports required for external RBLs
    Thanks
    Mudasar
    www.o2sp.com
    Open Source Solution Provider

  6. #6
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by Mudasar View Post
    There is information but not i am looking for.
    There's plenty of answers in the information I've given you if you read itr and I've already answered your question

    Quote Originally Posted by Mudasar View Post
    I am still still able to find the ports required for external RBLs
    If you can do an external lookup then you do not need any additional ports, you already have the correct port open.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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