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Connecting to Barracuda

Home Forums Networking Cisco Security – PIX/ASA/VPN Connecting to Barracuda

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  • Author

  • skeating


    I am trying to connect both inbound and outbound email from the Barracuda Email Security System to my Exchange 2010 server. Currently my Cisco 515 PIX has these two rules, which I believe are allowing mail in and out:

    XXX.XXX.XX.XX is the public IP for my Exchange server.

    access-list BORDER35 permit tcp any host XXX.XXX.XX.XX eq smtp

    static (inside,outside) tcp XXX.XXX.XX.XX smtp Exchange Server NAME smtp netmask 0 0

    access-list SMTP-OUT-I permit tcp host Exchange Server NAME any eq smtp

    I have no problem sending or receiving email.

    When I attempt to change the first rule to the following:

    access-list BORDER35 permit tcp eq smtp host XXX.XXX.XX.XX eq smtp

    I cannot receive email sent from an external email account. When I go into Barracuda, it shows the email there, with this message:

    Recipients Action Reason Delivery Status
    Email Address Allowed Spooled (XXX.XXX.XX.XX:451 No response to HELO/EHLO)

    I also cannot do a telnet to the outbound server: telnet 25.

    So my questions are, 1. What rules do I need (or revisions of the ones I have) in order to send and receive from Barracuda. 2. How do I open port 25 so I can telnet to the outbound server?

    I realize these maybe Cisco 101 questions, and I have researched this on the web, but I am getting nowhere at present. I appreciate any help.

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