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Updated Configure SPF (markdown)

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Thomas VIAL 2016-04-24 17:55:39 +02:00
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docs/content/config/best-practices/spf.md
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From Wikipedia:
From [Wikipedia](https://en.wikipedia.org/wiki/Sender_Policy_Framework):
> Sender Policy Framework (SPF) is a simple email-validation system designed to detect email spoofing by providing a mechanism to allow receiving mail exchangers to check that incoming mail from a domain comes from a host authorized by that domain's administrators. The list of authorized sending hosts for a domain is published in the Domain Name System (DNS) records for that domain in the form of a specially formatted TXT record. Email spam and phishing often use forged "from" addresses, so publishing and checking SPF records can be considered anti-spam techniques.