Changes / Mailgun / Intermittent Email Validation Errors

Mailgun: Major incident: Intermittent Email Validation Errors

Summary

Mailgun reported intermittent email validation errors with major impact affecting API and Email Validation components from 2026-02-25 19:10 UTC to 2026-02-25 21:45 UTC, lasting 2 h 35 min. A fix was implemented by 02-25 21:36 UTC, and the incident was resolved.

Machine-written from the diff below (Sol; type: incident degradation). Check the diff before relying on it.

Major incidentLabel: degradation (model (Jev), 68%)Changed Detected Source: stspg.io

What changed

AddedTitle#1
Before: not present
After: Intermittent Email Validation Errors
AddedImpact#2
Before: not present
After: major
AddedStatus#3
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After: resolved
AddedStart time#4
Before: not present
After: 2026-02-25 19:10 UTC
AddedResolved time#5
Before: not present
After: 2026-02-25 21:45 UTC
AddedAffected components#6
Before: not present
After: API, Deliverability Services - Email Validation, Email Services - API, Email Validation
AddedUpdateinvestigating#7
Before: not present
After: We are currently investigating this issue.
AddedUpdateinvestigating#8
Before: not present
After: We are continuing to investigate this issue.
AddedUpdateidentified#9
Before: not present
After: Domain verification is also impacted. Increased chances of domain verification failing. The issue has been identified and engineering is actively working on a fix.
AddedUpdateidentified#10
Before: not present
After: We are continuing to work on a fix for this issue.
AddedUpdateidentified#11
Before: not present
After: We are continuing to work on a fix for this issue.
AddedUpdateidentified#12
Before: not present
After: We are continuing to work on a fix for this issue.
AddedUpdatemonitoring#13
Before: not present
After: A fix has been implemented and we are monitoring the results.
AddedUpdateresolved#14
Before: not present
After: This incident has been resolved.

First version of this incident archived by Rewindex. View the live incident.

History of this incident

When (UTC)ChangeKind
Major incident: Intermittent Email Validation Errors (this change)
Mailgun reported intermittent email validation errors with major impact affecting API and Email Validation components from 2026-02-25 19:10 UTC to 2026-02-25 21:45 UTC, lasting 2 h 35 min. A fix was implemented by 02-25 21:36 UTC, and the incident was resolved.
Major incident

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