Use global policies for retry and error handling
If you are running a big Iguana implementation like some of our customers do then centralizing your retry logic and error handling into a common module makes a lot of sense. It takes a lot of the pain out of having to set this information on a one by one basis. Instead just set that logic in one place. For a big deployment it may make sense to really customize the error handling behaviour, i.e., call a web service, escalate the warnings if the outage exceeds a certain time threshold etc. The whole point of Iguana is that it puts you in the driving seat in terms of make Iguana work the way your organization works. See handling retry logic.