Outgoing external SMS were not working for a period from yesterday afternoon (not exactly sure of time) until this afternoon. We have identified the cause of the problem and it has been rectified. This will have impacted our normal SMS line/up down notifications as well.
The status code returned by our API would have indicated no parts of message sent. The messages are not queued and so will not be re-sent. They were not charged for.
Sorry for any inconvenience. We are looking in to ways we can pick up issues like this sooner in future.
Obviously we appreciate the fault report from the customer that made us aware of this issue.