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minor✓ Resolved

Cloudflare Access one-time PIN emails blocked by certain email security gateways, including Proofpoint

Cloudflare•Tue, Sep 1, 2026, 08:06 PM
Status
resolved
Duration
11h 13m
Updates
1
Coverage
0 articles

INCIDENT TIMELINE

✓ ResolvedWed, Sep 2, 2026, 07:20 AM
This incident has been resolved.
investigatingTue, Sep 1, 2026, 08:06 PM
Some customers using email security gateway like 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.

📊 TECHNICAL DETAILS

Internal ID
93d66d21-50fb-436e-bf33-116193033596
External ID
cczd80189gvc
🕐 Started
Tue, Sep 1, 2026, 08:06 PM
🔄 Last Updated
Wed, Sep 2, 2026, 07:20 AM
✓ Resolved
Wed, Sep 2, 2026, 07:20 AM
MINOR
Impact Level
11h 13m
Total Duration
1
Status Updates
Affected Components
Access
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