100.0% uptime
Jun 2026 · 100.0%Jul · 100.0%Aug · 100.0%
Jun 2026100.0% uptime
Jul 2026100.0% uptime
Aug 2026100.0% uptime
100.0% uptime
Jun 2026 · 100.0%Jul · 100.0%Aug · 100.0%
Jun 2026100.0% uptime
Jul 2026100.0% uptime
Aug 2026100.0% uptime
99.99% uptime
Jun 2026 · 100.0%Jul · 100.0%Aug · 99.97%
Jun 2026100.0% uptime
Jul 2026100.0% uptime
Aug 202699.97% uptime
Notice history
View current statusAug 2026
Email Delivery Failures to Microsoft 365 Domains
Resolved
- UTC
We have received confirmation that an external issue impacting email delivery to Microsoft 365 domains has been resolved. Impacted messages would have received an error stating "5.7.511 Access denied, banned sender" between Friday, August 14th and Monday, August 17th. Any failed messages will need to be resent.
Information on retrying messages can be found in our Help Center here: https://help.mailgun.com/hc/en-us/articles/18596982041883-Resending-messages

