Outbound email flow degraded service.

Incident Report for SMX Secure Cloud Solutions

Resolved

Between 10:37pm Saturday and 1:30am Sunday, Microsoft experienced issues with their Azure network that impacted SMX mail filtering services.

The root cause was Microsoft ceasing to announce SMX network prefixes via BGP at 22:37 and again at 23:31, which effectively made SMX infrastructure unreachable on the internet. As a result, all inbound and outbound mail filtering services were unavailable during this period.

BGP routing announcements were restored at approximately 00:10am, with services gradually coming back online from that point. Full functionality was confirmed restored by 1:30am Sunday.

Posted May 17, 2026 - 00:00 NZST