What is Sender Policy Framework (SPF)


What is Sender Policy Framework (SPF)

What is SPF?

Sender Policy Framework, it’s an email authentication protocol or it’s also called as validation system that allows the domain name owner to define a list of IPs, only this list can send emails on behalf of this domain.

What is the domain name?

Well, simply it’s your address that comes after the “@” in your email address.

WorldPosta SPF:

How does it work?

● The domain name owner send the list of IPs on the Domain name server in form of SPF records

● When an email is sent the email receiver start to try matching the IP received from the sender with the SPF records

● If it matched any of the records, the email is sent successfully as intended otherwise the sent email fails the SPF test and will be rejected by the WorldPosta email server or marked as suspicious. Let’s take a simple example as if you are working in a corporate called “X” your email address is [email protected] then your domain name here is “X.com” At your company, there is a domain name server where his admin have listed the SPF records holding your IP and all workers IPs that use the same domain for communication “X.com”. So if a spammer tries to use your email to send messages, it will fail the SPF test as their IP which is different than yours, is not listed in the domain name server. Their messages will be marked as spams or blocked.


What is the importance of SPF?

Well as we all know the importance of emails in the business communication, and how it’s important for any company to protect its name, so here comes the importance of setting SPF.

No one wants to risk sending a message with his name with a content that he knows nothing about and could risk his work or the whole company failure and loss of clients.

Other than protecting your name, SPF ensures that your email is sent to the intended place, which is the inbox of the recipient.