We're aware of intermittent outbound connectivity drops affecting some services, where outbound connections fail while internal networking and DNS keep working, and we're actively investigating. If you hit it, the quickest workaround is to redeploy, which moves your service onto a fresh host and restores connectivity. If it happens again, reply here with the rough time it started and we'll jump on it while it's live. Those real-time reports are exactly what help us track down the cause.