Menlo Security experienced a minor incident on September 7, 2026 affecting Global - Email Flow (Global - Email Flow), lasting 9m. The incident has been resolved; the full update timeline is below.
Affected components
Global - Email Flow (Global - Email Flow)
Update timeline
- investigating Sep 07, 2026, 01:27 PM UTC
An issue has been found and is currently under investigation. We are investigating reports of email being rejected with a 550 code when sending to Menlo. Further updates will be provided when they are available.
- resolved Sep 07, 2026, 01:36 PM UTC
Mitigation has now been applied and we are no longer seeing issues. Our engineering team will continue to monitor.