Intermittent Email Validation Errors

What to do

• Check whether you use Mailgun API, Email Validation. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 2h 35m it lasted.

  Anything that failed between 2026-02-25 19:10 UTC and 2026-02-25 21:45 UTC may need a replay.

• Subscribe to Mailgun's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=mailgun works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Mailgun 8

1. investigatingFeb 25, 2026, 7:10 PM UTC

   We are currently investigating this issue.

   provider

2. investigatingFeb 25, 2026, 7:29 PM UTC

   We are continuing to investigate this issue.

   provider

3. identifiedFeb 25, 2026, 7:29 PM UTC

   Domain verification is also impacted. Increased chances of domain verification failing. The issue has been identified and engineering is actively working on a fix.

   provider

4. identifiedFeb 25, 2026, 7:30 PM UTC

   We are continuing to work on a fix for this issue.

   provider

5. identifiedFeb 25, 2026, 7:47 PM UTC

   We are continuing to work on a fix for this issue.

   provider

6. identifiedFeb 25, 2026, 8:25 PM UTC

   We are continuing to work on a fix for this issue.

   provider

7. monitoringFeb 25, 2026, 9:36 PM UTC

   A fix has been implemented and we are monitoring the results.

   provider

8. resolvedFeb 25, 2026, 9:45 PM UTC

   This incident has been resolved.

   provider

Corrections

None so far.

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