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[Email Security] Move IPv4 addresses #23291

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Jun 30, 2025
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[Email Security] Move IPv4 addresses #23291

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[Email Security] Move IPv4 addresses
Maddy-Cloudflare Jun 27, 2025
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Maddy-Cloudflare Jun 27, 2025
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7 changes: 2 additions & 5 deletions ...docs/cloudflare-one/email-security/setup/pre-delivery-deployment/egress-ips.mdx
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Expand Up @@ -33,6 +33,8 @@ If you use Microsoft 365, you will have to use the broken down `/24` subnet mask
158.51.64.0/26
158.51.65.0/26
134.195.26.0/23
35.157.195.63
52.58.35.43
```

### IPv6
Expand All @@ -41,11 +43,6 @@ If you use Microsoft 365, you will have to use the broken down `/24` subnet mask
2405:8100:c400::/38
```

```txt
52.58.35.43
35.157.195.63
```

## Microsoft 365 `/24` addresses

Use these IPv4 addresses for Microsoft 365, instead of the `/19` and `/23` subnets:
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