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

Discussion in 'VPS Provider Network Status' started by eva2000, Sep 2, 2026 at 6:24 AM.

  1. eva2000

    eva2000 Administrator Staff Member

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    May 24, 2014
    Brisbane, Australia
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    Nginx 1.31.x
    MariaDB 10.x/11.4+/12.3+
    Sep 1, 20:06 UTC
    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.


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