RFC 4408 · April 2006 · M. Wong, W. Schlitt
Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail, Version 1
EXPERIMENTALIETF stream
Obsoleted by RFC 7208. Read the newer document for current behaviour.
1 verified errata2 held for document update
Index fetched 2026-10-19 from rfc-editor.org
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