Exchange Server 2010: IP block listed receiveing bounce messages


  • Hi friends

    i have recently getting some bounce message from my customer when the send email to my users they receive this bounce messages.and i only get bounce message from two of my customers with different domains when they send emails to my users.

    This message was created automatically by mail delivery software.

    A message that you sent could not be delivered to one or more of its

    recipients. This is a permanent error. The following address(es) failed:

        SMTP error from remote mail server after RCPT


        host []: 554 5.7.1 ACL dns_rbl; Client

    host [] blocked using

    Please visit for more information on why

    this message could not be delivered

    i have Barracuda Spam filter devices connected with my exchange 2010 server, can anyone tell me what is could be the error??



    • Edited by GreeMann Wednesday, December 12, 2012 8:23 AM
    Wednesday, December 12, 2012 7:17 AM


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