Mesh Security experienced a minor incident on May 22, 2025 affecting Inbound Email Security, lasting 4h 30m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating May 22, 2025, 05:11 AM UTC
There appears to be some Email Delays on the EU Inbound Gateway Infrastructure. We're currently investigating.
- monitoring May 22, 2025, 05:27 AM UTC
We're currently monitoring inbound delivery on the EU. Delivery times are currently within a normal range.
- monitoring May 22, 2025, 06:38 AM UTC
We believe the issue is localised to Microsoft O365s AUS Infrastructure, as all other inbound traffic on the Mesh Gateway Service is unaffected. We'll continue to monitor.
- monitoring May 22, 2025, 07:12 AM UTC
Microsoft have acknowledged the issue affecting Exchange Online in Australia. https://x.com/MSFT365Status/status/1925443356118688152 We'll continue to monitor.
- monitoring May 22, 2025, 09:26 AM UTC
All Mesh services are continuing to function normally, however, we are still seeing mail flow irregularities to Australian customers on Microsoft 365. This is not an issue specific to customers using Mesh. Microsoft are now reporting that they have identified the cause and have put in a fix - https://x.com/MSFT365Status/status/1925482680646357013 We will continue to monitor.
- resolved May 22, 2025, 09:42 AM UTC
We can confirm successful delivery of emails to customers based in Australia on Microsoft 365. This has now been resolved and we will continue to monitor. Thank you.