Resolved -
This incident has been resolved.
VMO2 have confirmed that, as their O2 SMSC was not receiving an acknowledge from their Virgin SMSC, messages towards Virgin subscribers were sent into a retry pattern.
This has resulted in multiple deliveries of the same SMS, only one DR would have been received in these instances. As such, end users may have complained about multiple SMS delivery during the period of this VMO2 incident.
Sinch have observed stable service since 22:00 UTC on 17th July. Incident closed but further feedback has been requested, by Sinch, from VMO2.
Incident Start Time: 2023-07-14 13:02 UTC
Incident End Time: 2023-07-17 22:00 UTC
Jul 21, 10:24 UTC
Update -
We are continuing to monitor for any further issues.
Jul 20, 12:08 UTC
Update -
We are continuing to monitor for any further issues.
Jul 19, 11:02 UTC
Monitoring -
VirginMedia O2 confirmed the issue was resolved, at 22:00 UTC 17th July, by the carrier they use between their O2 and Virgin Mobile networks.
Sinch is still seeking further information from VirginMedia O2 on this incident.
DR's from the time of the incident continue to deliver to Sinch.
Jul 18, 08:19 UTC
Update -
We are continuing to investigate this issue.
Jul 18, 08:04 UTC
Update -
We are continuing to investigate this issue.
Jul 17, 07:01 UTC
Update -
We are continuing to investigate this issue.
Jul 16, 10:01 UTC
Update -
We are continuing to investigate this issue.
Jul 15, 09:05 UTC
Update -
We are continuing to investigate this issue.
Jul 15, 01:02 UTC
Update -
We are continuing to investigate the issue.
Jul 14, 20:46 UTC
Update -
We are continuing to investigate the issue.
Jul 14, 18:10 UTC
Investigating -
We are currently observing delivery issues towards United Kingdom - Virgin Mobile
Incident Start Time: 2023-07-14 13:02 UTC
Impact: Delayed MT's, Missing delivery receipts, Late delivery receipts
We will update as soon as we have more information.
Jul 14, 16:39 UTC