Mailgun incident

HTTPS Tracking Certificate Creation / Renewal blocked by Let's Encrypt Outage

Minor Resolved View vendor source →

Mailgun experienced a minor incident on July 21, 2025 affecting API, lasting 11h 37m. The incident has been resolved; the full update timeline is below.

Started
Jul 21, 2025, 11:56 PM UTC
Resolved
Jul 22, 2025, 11:33 AM UTC
Duration
11h 37m
Detected by Pingoru
Jul 21, 2025, 11:56 PM UTC

Affected components

API

Update timeline

  1. identified Jul 21, 2025, 11:56 PM UTC

    Let's Encrypt, the certificate issuer used for creating certificates on customer tracking domains is experiencing an outage (https://letsencrypt.status.io/). Attempting to generate or regenerate a tracking certificate will not succeed until service is restored.

  2. monitoring Jul 22, 2025, 05:22 AM UTC

    The current status of Let's Encrypt infrastucture is "[Identified] We have deployed mitigations for the failure of our internal DNS servers. Issuance of certificates is now succeeding, though we are still recovering from the resulting high traffic volumes." We are monitoring the situation and will update our status page accordingly.

  3. resolved Jul 22, 2025, 11:33 AM UTC

    This incident has been resolved.