Guardian should output or at least log warnings when DNS requests take a long time.
Seen in a recent ticket - if DNS forward or especially reverse lookups take a
long time to resolve, there can be severe browsing consequences, problems
accessing the proxy, loading IPTables etc.
Guardian should throw up a visual alert/warning in the web GUI, or at least log
a warning message in a log that will be clear for customers or support
engineers to see.
Stephen Baynes commented
Since the introduction of the asynchronous DNS resolver,
"Resolver-cares: possible slow DNS, encountered %d timeouts" should be seen in the system message log when a DNS request takes a long time.
George Lungley commented
This seems to be a problem that occurs quite often with new installations/evaluations. The customer thinks that Guardian must be at fault. Something to bring the slow DNS to their attention would save the finger wrongly being pointed at Smoothwall plus save the Support Team time.