11th April 2018

SMS Messaging API Update: Delivery report issues to Estonia - Telia network

We have identified the root cause of missing delivery reports.

After communicating with the operator and checking our logs in depth, we have determined that the root cause is in the timestamp mismatches of the Delivery Report and the initial ACK response.

We have notified the operator about the issue and are working with them to solve the problem as fast as possible.

The delivery of the SMS is unaffected - only delivery reports are affected by this issue.