canSendRemote

postal.federation adds a wire tap to the local instance of postal, and any message that is published locally gets compared to the filters, to determine if it can be sent to remote instances. The canSendRemote( channel, topic ) method - which is fired inside the wire tap - is the method that executes the comparison of the candidate postal envelope to the filters. Under the hood, the postal bindings resolver is being used to compare the channel/topic of the message to the filters.