An administrator is troubleshooting an issue with Office365 and expects that this traffic traverses the firewall. When reviewing Traffic Log entries, there are no logs matching traffic from the test…

Office365 traffic, if it traverses the firewall, would be logged in the Traffic Log, not the System Log, which records firewall operational events.

Authentication Log records user authentication events, not general application traffic like Office365.

The interzone-default rule applies to traffic flowing between different security zones and has a default action of Deny. Critically, this default rule does not have logging enabled by default, meaning any traffic matching it will be silently dropped without an entry in the Traffic Log.

While blocked traffic can be in the Threat Log if a threat is detected, traffic blocked by a security policy rule (like the interzone-default rule) that doesn't have logging enabled would not appear in the Threat Log, which is specifically for detected threats.