Minor ImpactLast updated: Refreshed just now
Cloudflare Access one-time PIN emails blocked by certain email security gateways, including Proofpoint
Started
Timeline
- Monitoring
A fix has been implemented and we are monitoring the results.
- Identified
The issue has been identified and a fix is being implemented.
- Investigating
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 customers should ask their Proofpoint administrator to allowlist notify.cloudflare.com and Cloudflare IPs 104.30.16.2,104.30.16.3,104.30.16.4,104.30.16.5,104.30.16.6, and 104.30.16.7. If this cannot be configured locally, contact Proofpoint for additional support.