SPF (Sender Policy Framework)
SPF is a DNS record that lists which mail servers are authorized to send email for your domain.
In plain English
A list you publish that says “only these mail servers are allowed to send email for my domain,” so others can reject fakes sent from somewhere else.
SPF (Sender Policy Framework) is a security mechanism that helps prevent email spoofing. It allows a domain owner to specify in their DNS records which IP addresses or hostnames are allowed to send emails on behalf of their domain.
When an email is received, the recipient's mail server checks the sender's SPF record. If the email comes from a server not listed in the record, it may be marked as spam or rejected. Our email validator and DNS lookup can help you verify your SPF configuration.
Examples & Usage
Example SPF Record
v=spf1 include:_spf.google.com ~allComplex SPF Record
v=spf1 ip4:1.2.3.4 include:example.com -all