As the title says, for some reason one of our Groupwise servers has stopped delivering external mail. Users can send internal mail without issue. I checked all of the agents and I don't see any errors in the logs, but I'm a bit new to Groupwise so I'm not 100% sure what I'm even looking for. I checked the databases too, and they all seemed OK. Any assistance would be appreciated. I can give more information if needed, not really sure what's considered useful to know.