Sender Policy Framework

FAQ/How does it work

Difference (from prior major revision) (minor diff)

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'''Question''': Explain how SPF works in 1 minute.		== Explain how SPF works in 1 minute.
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'''Answer''': Domains use public records (DNS) to direct requests for different services (web, email, etc.) to the machines that perform those services.All domains already publish email (MX) records to tell the world what machines receive mail for the domain.		Domains use public records (DNS) to direct requests for different services (web, email, etc.) to the machines that perform those services. All domains already publish email (MX) records to tell the world what machines receive mail for the domain.
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With SPF, those "reverse MX" records are easy to publish: one line in DNS is all it takes.		With SPF, those "reverse MX" records are easy to publish: one line in DNS is all it takes.
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Explain how SPF works in 1 minute.

Domains use public records (DNS) to direct requests for different services (web, email, etc.) to the machines that perform those services. All domains already publish email (MX) records to tell the world what machines receive mail for the domain.

SPF works by domains publishing "reverse MX" records to tell the world what machines send mail from the domain. When receiving a message from a domain, the recipient can check those records to make sure mail is coming from where it should be coming from.

With SPF, those "reverse MX" records are easy to publish: one line in DNS is all it takes.

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Sender Policy Framework

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Explain how SPF works in 1 minute.

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