Cloudflare Access one-time PIN emails blocked by certain email security gateways, including Proofpoint
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Cloudflare Access one-time PIN emails blocked by certain email security gateways, including Proofpoint Cloudflare operates global DNS, CDN, WAF, and edge network services. Outages here often affect many sites and APIs that sit behind their network.
resolved · 2 Sep 2026, 07:16 UTC
This incident has been resolved.
investigating · 1 Sep 2026, 20:06 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.
5
Related incidents
11h 9m
This incident
3h 34m
Avg. resolution time
Slower
vs. average
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