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Email Almanac / AUTHENTICATION & VERIFICATION / Forwarding Scenarios & ARC Reliance / How does email forwarding break SPF?

How does email forwarding break SPF?

Forwarding changes the sending IP. The new IP is not in the original domain’s SPF record, so SPF fails.

Related Questions

Why does forwarding break SPF alignment? Can email forwarding break DKIM? How does DKIM survive forwarding? How do mailing lists affect authentication?

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Written by Yanna-Torry Aspraki Founder, Review My Emails Review My Emails

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Last updated: February 7, 2026

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