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IETF RFC 4408
Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail, Version 1
IETF • Experimental • [Superseded*]
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Starting document root:
IETF RFC 4408
Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail, Version 1
IETF • Experimental • [Superseded*]