What is a SPF record?

A Sender Policy Framework (SPF) record is set as TXT entry into your DNS server.

This record prevent other foreign email server/spammer to send emails in the name of your domain name.

The most sources are confusing and over loaded, so I decided to make my app.

It is very simple and you only have to read a few lines to understand the app

and not tones of websites and other sources, to understand how to create it.

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To my App: Very Simple SPF Record Generator

 

A short extraction from Wikipedia:

Sender Policy Framework (SPF) is an email validation system designed to prevent email spam by detecting email spoofing, a common vulnerability, by verifying sender IP addresses. SPF allows administrators to specify which hosts are allowed to send mail from a given domain by creating a specific SPF record (or TXT record) in the Domain Name System (DNS). Mail exchangers use the DNS to check that mail from a given domain is being sent by a host sanctioned by that domain's administrators.[1]

Sender Policy Framework is defined in IETF publication RFC 4408