Bandwidth: SMS and MMS 10DLC Spam Rejection Incident
Timeline of updates
- resolved
For a short period of time, some 10DLC SMS and MMS messages towards AT&T destinations incorrectly received a rejection related to Spam Filtering due to an off-network condition. The incident has been resolved and we are observing expected network behavior.
- postmortem
Between 17:30 UTC and 18:15 UTC on October 7, 2026, some 10DLC SMS and MMS messages towards AT&T destinations incorrectly received a rejection related to Spam Filtering due to an off-network condition. Bandwidth is continuing to investigate this issue to identify all actions necessary to prevent this from recurring and will update this post with an Incident Report after investigations have concluded. We are grateful you have entrusted Bandwidth as your communication partner and we are sorry if this issue resulted in any disruption to your services.
Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab).