Enhanced SMTP status code · RFC 3463 · IANA
5.7.32 Your email was blocked because the From: header (RFC5322) in this message isn't aligned with either the authenticated SPF or DKIM organizational domain
The From domain is aligned with neither the SPF nor the DKIM domain, as DMARC requires.
- Class: Permanent failure
Class 5: a permanent failure. Resending the same message will not help: something about the message, the sender or the destination must change (RFC 3463 §3.1).
Also seen as:
4.7.32 - Subject: X.7 · Security and policy
Policies (per-host or per-recipient filters) and cryptographic operations; up to the sender, the recipient or both.
How 5.7.32 appears at providers
The exact text from the provider's documentation, as you see it in the bounce, and what it means.
Gmail
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421 5.7.32
Your email was blocked because the From: header (RFC5322) in this message isn't aligned with either the authenticated SPF or DKIM organizational domain.
The From domain is aligned with neither the SPF nor the DKIM domain, as DMARC requires. Check with Mail delivery test.
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421 4.7.32
Your email has been rate limited because the From: header (RFC5322) in this message isn't aligned with either the authenticated SPF or DKIM organizational domain.
The From domain is aligned with neither the SPF nor the DKIM domain, as DMARC requires. Check with Mail delivery test.
What you can check here
Have the whole error message?
Sources: RFC 5321 · RFC 3463 · RFC 3464 · IANA · Gmail · Microsoft 365 · read on 26 September 2026