Linksys RT31P2 and Sender Policy Framework verification

Discussion in 'Networking Issues' started by muldrec, Sep 9, 2005.

  1. muldrec

    muldrec Guest

    I use a Mozilla Thunderbird (email client) extension that performs client-side Sender Policy Framework (SPF) verification of my received e-mail messages. It has worked great.

    In July, I replaced my Linksys BEFVP41 with a Linksys RT31P2 because of my new usage of Vonage services. The only difference between the two devices is one acts as a VPN server and the other acts as a voice terminal adapter. All data network routing functions and configuration are the same.

    Since that time, the SPF verification has not worked from my home. I can take my laptop to any other public network, and the SPF verification works.

    The only thing that I can deduce is that the Linksys RT31P2 is blocking port 53/tcp, which is how SPF communicates with public DNS servers. However, I cannot validate this deduction.

    Has anyone experienced the same or similiar problem? Is there a way to validate the port 53/tcp blocking?

    Thanks in advance for your help.
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