Have a Production instance of Marketing with an Event Portal running on a custom, authenticated domain w/ SSL (as required). Earlier, I was able to view my Event pages using the microsoftcrmportals.com URL or the same URL with my custom domain. No idea what I did, but now I get the error message below with my custom domain even though I'm using the Event URL that Marketing is creating for me. I thought, initially, it might have been because I edited the Readable Event ID to be something more readable, but I created a brand new event and kept the more cryptic Readable event ID with the same result. I have also tried just restarting the portal with no luck. The portal is working since I can see the event with the Microsoft domain, so it's something about resolving the custom domain. Help?!
Http failure response for dinnerby.microsoftcrmportals.com/.../ 0 Unknown Error