Marketing Calendar 2025
Sender Policy Framework (SPF)
Sender Policy Framework (SPF) is an email authentication method that helps verify a sender’s identity to prevent email spoofing. It works by allowing domain owners to specify which mail servers are authorised to send emails on their behalf.
SPF is a security protocol designed to reduce the risk of email fraud. It operates at the Domain Name System (DNS) level, where domain owners publish SPF records that contain a list of approved IP addresses and servers allowed to send emails from their domain. When an email is received, the receiving mail server checks the SPF record of the sender’s domain. If the email comes from an approved source, it passes SPF authentication; if not, it may be rejected or marked as suspicious.
Resources about SPF
What is Sender Policy Framework (SPF)?
Read the blog
Blog
What is Sender Policy Framework (SPF)?
Spotler editorial team
14-10-2022
What is SPF (Sender Policy Framework), why is it needed and what does it do? Learn more about this email authentication standard.
An elementary explanation of email authentication
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Blog
An elementary explanation of email authentication
Spotler editorial team
25-04-2022
We explain what Email Authentication, why it is important, how it can help and how it can counter vulnerabilities.
Behind the spam folder
Read the blog
Blog
Behind the spam folder
Spotler editorial team
20-02-2022
How does the spam folder work? What makes you go from trusted sender to spammer? How do you fix a bad reputation?