Users also have the option of blocking domain-name service (DNS) for some programs but not others. The following instructions are from the article, Firewall rules for applications in Kaspersky Internet Security 7.0: Using the Delete button, you can delete a rule for the selected application (e.g., Firefox.exe).
The firewall may be a freestanding program, or it may be part of an Internet security package.
For more information see these Mc Afee support documents: The Symantec support site for Norton products offers extensive resources, including the Auto Fix Tool for home users and a FAQ page. Important: Even after all Norton products are uninstalled, a driver or kernel service (e.g., SYMTDI) can be left behind that blocks Internet access.
  The Enum Process tool can be used to detect all firewall processes and servies.
If you don't need this fine grained control rather than pressing the parent browse button select "skip parent check" to make it use one rule (and avoid specifying who can launch it).
If it already has multiple rules selecting "skip parent check" in any of those rules should automatically delete the other Thunderbird rules.