Use IP addresses in the SPF record

progmaticltd / homebox

A set of ansible scripts to build a personal mail server / private cloud / etc.

https://homebox.space/

GNU General Public License v3.0

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Closed fredericmoulins closed 4 years ago

fredericmoulins commented 4 years ago

Use the ip4 and ip6 mechanisms to avoid DNS queries for servers checking the SPF record.

This is done under the assumption that the IP addresses are static, and will not be renumbered without an update of the SPF record.