Can't View Pics in Email (Red X)

I am running Vista with Eudora as my email client. In many emails instead of a pic I get a box with a red x. If I shut down Comodo I am then able to view the pics. How do I correct this in Comodo? Do I need to set a rule and if so, how do I do it?

Are you using the CFP3 default rules for email client? The rule to allow embedded http is missing:
allow/tcp/out/any/any/any/http ports. Just add this to the default rules for email clients under firewall/advanced/predefined firewall policies.