On October 19th 2022 at 09:51 CEST Zivver was contacted by multiple customers stating that their SMTP connection with Zivver wasn’t working. After which Zivver’s engineers found the source of the issue and mitigated it at 10:15 CEST on the same day.
The impact for users was that their email server could not connect to our SMTP server and therefore would retry sending on a later time. The impact was that the emails they sent during the time at which our SMTP server was unavailable, were delayed.
Zivver’s engineers saw that a storage exception was triggered, resulting in the outage of the service. Changing storage parameters mitigated the incident.
These actions will prevent this issue from happening again in the future: