2024-01-16: Email Delays
Customer Impact
We are receiving an increased number of reports for delays with email delivery from both GitLab staff and customers.
Current Status
We've implemented mitigations, which seem to be bringing delays down to normal levels.
New mail server IPs are warming up. That will take 24-48 hours to complete. We will continue to monitor email delivery delays, but expect them to improve/maintain normal levels from now on.
Once they're all up, we will consider marking this as resolved.
More information will be added as we investigate the issue. For customers believed to be affected by this incident, please subscribe to this issue or monitor our status page for further updates.
📝 Summary for CMOC notice / Exec summary:
- Customer Impact: Delays in emails sent by the GitLab application at gitlab.com
- Service Impact: ServiceGitLab Rails
- Impact Duration: 2024-01-16 13:29 UTC - 2024-01-16 23:51 UTC (622 minutes)
- Root cause: Mailgun throttled our email delivery. There are many factors that go into triggering throttling.
📚 References and helpful links
Recent Events (available internally only):
- Feature Flag Log - Chatops to toggle Feature Flags Documentation
- Infrastructure Configurations
- GCP Events (e.g. host failure)
Deployment Guidance
- Deployments Log | Gitlab.com Latest Updates
- Reach out to Release Managers for S1/S2 incidents to discuss Rollbacks, Hot Patching or speeding up deployments. | Rollback Runbook | Hot Patch Runbook
Use the following links to create related issues to this incident if additional work needs to be completed after it is resolved:
- Corrective action ❙ Infradev
- Incident Review ❙ Infra investigation followup
- Confidential Support contact ❙ QA investigation
Note: In some cases we need to redact information from public view. We only do this in a limited number of documented cases. This might include the summary, timeline or any other bits of information, laid out in our handbook page. Any of this confidential data will be in a linked issue, only visible internally. By default, all information we can share, will be public, in accordance to our transparency value.
Security Note: If anything abnormal is found during the course of your investigation, please do not hesitate to contact security.