IPv4 Addresses

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Mail Servers

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SPF (Sender Policy Framework)

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SPF SPFv1
Qualifier Mechanism Target / value Valid Details
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass a
+ Pass mx
+ Pass ptr
? Neutral all

SPF warnings

  • The ptr mechanism is slow and discouraged in SPF
20m

Text Content

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MS=ms14426592
20m