ตัวตรวจสอบระเบียน SPF

What is SPF?

• SPF (Sender Policy Framework) is an email-authentication technique used to prevent spammers from sending messages on behalf of your domain.
• With SPF, an organization can publish authorized mail servers.
• Together with DMARC, SPF helps the receiver (or receiving systems) determine how trustworthy the origin of an email is.

How does SPF work?

• SPF, like DMARC, is an email authentication technique that uses DNS (Domain Name Service).
• It allows you, as an email sender, to specify which email servers are permitted to send emails on behalf of your domain.