Sender Policy Framework

Mechanism/all

The "`all`" mechanism (edit)

all

This mechanism always matches. It usually goes at the end of the SPF record.

Examples:

v=spf1 mx -all

Allow domain's MXes to send mail for the domain, prohibit all others.

v=spf1 -all

The domain sends no mail at all.

v=spf1 +all

The domain owner thinks that SPF is useless and/or doesn't care.

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Sender Policy Framework

Mechanism/all

The "all" mechanism (edit)

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The "`all`" mechanism (edit)