Windows Vista Forums

Blocked by cbl.abuseat.org

  1. #1


    John Guest

    Blocked by cbl.abuseat.org

    Hi

    sbs 2003 standard. Our emails are being bounced with the message that our Ip
    is blocked using cbl.abuseat.org. What can I do to remove the reason for the
    block to avoid this in future?

    Many Thanks

    Regards



      My System SpecsSystem Spec

  2. #2


    Thomas Nielsen Guest

    Re: Blocked by cbl.abuseat.org

    Does your firewall alow other computers on your LAN than the server to use
    port 25 TCP (SMTP) outgoing?
    If yes, that is most likely your problem

    Best regards
    Thomas Nielsen

    "John" <info@newsgroup> wrote in message
    news:OW%23K0cL$KHA.980@newsgroup

    > Hi
    >
    > sbs 2003 standard. Our emails are being bounced with the message that our
    > Ip is blocked using cbl.abuseat.org. What can I do to remove the reason
    > for the block to avoid this in future?
    >
    > Many Thanks
    >
    > Regards
    >


      My System SpecsSystem Spec

  3. #3


    John Guest

    Re: Blocked by cbl.abuseat.org

    Hi

    I have run the ICW and kept the firewall option ticked in the wizard. What
    more can I do?

    Thanks

    Regards

    "Thomas Nielsen" <t_nielsen01@newsgroup> wrote in message
    news:OGgrhIM$KHA.4308@newsgroup

    > Does your firewall alow other computers on your LAN than the server to use
    > port 25 TCP (SMTP) outgoing?
    > If yes, that is most likely your problem
    >
    > Best regards
    > Thomas Nielsen
    >
    > "John" <info@newsgroup> wrote in message
    > news:OW%23K0cL$KHA.980@newsgroup

    >> Hi
    >>
    >> sbs 2003 standard. Our emails are being bounced with the message that our
    >> Ip is blocked using cbl.abuseat.org. What can I do to remove the reason
    >> for the block to avoid this in future?
    >>
    >> Many Thanks
    >>
    >> Regards
    >>
    >
    >


      My System SpecsSystem Spec

  4. #4


    Larry Struckmeyer[SBS-MVP] Guest

    Re: Blocked by cbl.abuseat.org

    Hi John:

    New mail server or new problem on existing mail server? New IP or new problem
    on existing IP? There are many possible reasons, including the possibility
    that the ip was on the isps list of dynamic ips sometime in the past and
    is drawn from a dynamic pool.

    As Thomas points out, you could also have a rouge smtp server on your network.
    Best way to test for that is to watch the traffic or to set the firewall,
    edge device, to not allow any outgoing traffic on port 25 except from the
    ip of the SBS.

    Without knowing the domain name or ip that is being blocked, there is not
    a lot more we can do.

    -
    Larry
    Please post the resolution to your
    issue so others may benefit
    -
    Get Your SBS Health Check at
    www.sbsbpa.com


    > Hi
    >
    > sbs 2003 standard. Our emails are being bounced with the message that
    > our Ip is blocked using cbl.abuseat.org. What can I do to remove the
    > reason for the block to avoid this in future?
    >
    > Many Thanks
    >
    > Regards
    >


      My System SpecsSystem Spec

  5. #5


    Jim Behning SBS MVP Guest

    Re: Blocked by cbl.abuseat.org

    www.mxtoolbox.com is where I start. As others have mentioned, I block
    all workstations from sending email directly to the internet either in
    my Sonicwalls or in ISA. If you have a two nic SBS that is acting as
    the internet gateway for workstations you can run Wireshark to see
    what workstation is infected.Unfortunately unless you are running ISA
    or have a quality internet router, you cannot block infected
    workstation from causing you to get on spam blacklists.

    On Wed, 26 May 2010 11:24:57 +0000 (UTC), Larry Struckmeyer[SBS-MVP]
    <lstruckmeyer@newsgroup-wizards.com> wrote:

    >
    >Hi John:
    >
    >New mail server or new problem on existing mail server? New IP or new problem
    >on existing IP? There are many possible reasons, including the possibility
    >that the ip was on the isps list of dynamic ips sometime in the past and
    >is drawn from a dynamic pool.
    >
    >As Thomas points out, you could also have a rouge smtp server on your network.
    > Best way to test for that is to watch the traffic or to set the firewall,
    >edge device, to not allow any outgoing traffic on port 25 except from the
    >ip of the SBS.
    >
    >Without knowing the domain name or ip that is being blocked, there is not
    >a lot more we can do.
    >
    >-
    >Larry
    >Please post the resolution to your
    >issue so others may benefit
    >-
    >Get Your SBS Health Check at
    >www.sbsbpa.com
    >
    >

    >> Hi
    >>
    >> sbs 2003 standard. Our emails are being bounced with the message that
    >> our Ip is blocked using cbl.abuseat.org. What can I do to remove the
    >> reason for the block to avoid this in future?
    >>
    >> Many Thanks
    >>
    >> Regards
    >>
    >
    See what SBS support is working on
    http://blogs.technet.com/sbs/default.aspx
    Check your SBS with the SBS Best Practices Analyzer
    http://blogs.technet.com/sbs/archive...A/default.aspx

      My System SpecsSystem Spec

  6. #6


    Merv Porter [SBS-MVP] Guest

    Re: Blocked by cbl.abuseat.org

    Just going through this myself for a client...

    In the delivery error message, there should be a link to spamhaus.org.
    Click on it and then click on the CBL link on that page. It should take you
    to a CBL page explaining the procedures for delisting your IP address.
    Since I suspect your using a 3rd party email hosting company, according to
    the CBL page, only that hosting company can accomplish this delisting
    through CBL. Bottom link, fill out a trouble ticket with your email hoster
    to have this fixed.

    --
    Merv Porter [SBS-MVP]
    ============================

    "John" <info@newsgroup> wrote in message
    news:OW#K0cL$KHA.980@newsgroup

    > Hi
    >
    > sbs 2003 standard. Our emails are being bounced with the message that our
    > Ip is blocked using cbl.abuseat.org. What can I do to remove the reason
    > for the block to avoid this in future?
    >
    > Many Thanks
    >
    > Regards
    >

      My System SpecsSystem Spec

  7. #7


    Merv Porter [SBS-MVP] Guest

    Re: Blocked by cbl.abuseat.org

    BTW... if you're using a 3rd party hoster for email, there is little you
    can do to prevent this as you share a mail server with several hundred other
    domains, all using the same mail server that can become infected or be
    identified as a spammer. (The mail server IP address for all these domains
    is the same as yours). Hosting your own mail or, possible, having your ISP
    host your mail may be the only viable solutions (and even these would not be
    guaranteed to never be listed as a spammer).

    --
    Merv Porter [SBS-MVP]
    ============================

    "John" <info@newsgroup> wrote in message
    news:OW#K0cL$KHA.980@newsgroup

    > Hi
    >
    > sbs 2003 standard. Our emails are being bounced with the message that our
    > Ip is blocked using cbl.abuseat.org. What can I do to remove the reason
    > for the block to avoid this in future?
    >
    > Many Thanks
    >
    > Regards
    >

      My System SpecsSystem Spec


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