Update - The carrier has put in some further improvements to reduce the impact of this problem.

They are still working on fully resolving the underlying problem. We are continuing to work with them to get this resolved as soon as possible.

Another update will be provided as events warrant them.
May 11, 07:59 AEST

Update - We are still working with the carrier in investigating and understanding the issue.

At this time it does look intermittent, with the majority of inbound messages being received as intended, however there is a subset where they are delayed or not received at all.

Another update will be provided as events warrant them.
May 10, 16:05 AEST