Mailgun outage, October 2024: Europe - Email Delivery Latency

Mailgun reported and resolved an incident: Europe - Email Delivery Latency. It lasted 8.5 hours.

Resolved

From Mailgun's official status page, in their words.

What happened

Started
Resolved
Duration
8.5 hours
Impact
minor
Affected
Outbound Delivery
  1. Investigating
  2. Identified
  3. Monitoring
  4. Resolved

Why it happened

Mailgun has not given a cause in its updates. We never guess one.

How it was resolved

Mailgun marked it resolved at 18 Oct 2024, 7:41 am without a written explanation of the fix.

This incident on the Mailgun status page

Timeline

Oldest first, from the first notice to the resolution. From Mailgun's official status page, in their words.

  1. identified

    Due to network connectivity issues with a third party, there is a chance that emails being sent through Mailgun's EU region are experiencing delivery delays. The issue has been identified and a fix is in progress.

  2. identified

    We are continuing to work with our networking partner on the fix. Only customers sending with IPs in the 159.135.132.0/24 range are impacted.

  3. monitoring

    Connectivity has been restored, we are monitoring the traffic backlog as sending resumes.

  4. monitoring

    We are continuing to process the sending backlog at a reduced rate while things recover. Delays for the affected network should still be expected.

  5. identified

    Further mitigations are being worked on to resolve networking issues, messages will continue to be delayed until a full fix is implemented.

  6. identified

    We are continuing to work with our network provider to bring this range online.

  7. monitoring

    A fix has been implemented and traffic is sending through these networks. We are monitoring the resolution.

  8. resolved

    This incident has been resolved.

What this means for a business (and what to check now)

  • Retry anything that failed during the 8.5 hours.
  • Enter any payments, bookings or jobs you took another way.
  • If a deadline fell inside the window, keep this page as your record of the outage.

The full guide: what to do when a service you rely on is down

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