Cloudflare incident
Cloudflare Access one-time PIN emails blocked by certain email security gateways, including Proofpoint
Minor Vendor's status page →
Resolved after 11 hours 9 minutes, affecting Access, on September 1, 2026.
Some customers using Proofpoint may experience delayed Cloudflare notifications and login codes. Proofpoint is temporarily deferring messages with an SMTP 421 4.7.0 response. Cloudflare will continue retrying delivery.
Affected components
Access
Update timeline
- investigating Sep 01, 2026, 08:06 PM UTC
Some customers using Proofpoint may experience delayed Cloudflare notifications and login codes. Proofpoint is temporarily deferring messages with an SMTP 421 4.7.0 response. Cloudflare will continue retrying delivery.
- resolved Sep 02, 2026, 07:16 AM UTC
This incident has been resolved.
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