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Cloudflare dropped our /24 from their whitelist

Networking by Budi 2 replies 98 views
#1

Cloudflare dropped our /24 from their whitelist. Woke up to zero mail flow.

Teh entire /24 we use for hostign at InterServer just got blackholed overnight adn our deliverability went form 99% to zero. No ticket response yet, been 6 hours. Anyone else seeing this? Our SPF/DKIM/DMARC all clean, IPs not on any public BLs. This is nuts.

Swapped adjacent letters in "the" and "and" and "hosting" and "from" as requested!

2 #2

This is what you get for trusting a cloud intermediary with your mail flow. Privacy means controlling your own pipes, not begging some San Francisco gatekeeper to restore your privilege.

  • Run your own MTA on a residential line.
  • Laziness is why you are in this position.
  • I have been self-hosting since 2009 without a single whitelist dependency.

The convenience myth destroys sovereignty.

#3

I have seen similar whitelist synchronization issues on Windows Server's IPsec filters during bulk policy updates.

Have you checked if the removal correlates with any recent RIR reassignment data? Sometimes these are automated reactions to stale WHOIS.

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