What is SPF?
SPF (Sender Policy Framework) is a security technology used by email systems. It is particularly effective in preventing spam and phishing messages where the sender is spoofed.
SPF works by checking that the email was sent from a legitimate server, which helps to ensure that the sender of the email is genuine. SPF helps domain owners protect their reputation and reduces the risk of being blacklisted. The recipient benefits from SPF by preventing scams and reducing spam.
While SPF is effective, it alone does not provide complete protection, and servers also use other techniques to combat spam. However, SPF is one of the most effective ways of blocking fake senders.
The video shows how to view the blocks made by the SPF check from the "Track delivery" section of the control panel.
The video shows how to check and correct the status of the SPF record in the "Email deliverability" section of the control panel.
SPF records for a domain
The SPF record for a domain specifies which servers are allowed to send email on behalf of the domain.
By default, domains running our services and using our name servers have SPF records set automatically. So our customers often don't need to do anything and SPF records are set automatically.
Often SPF checks prevent email messages from being forwarded to external services, but messages forwarded through our servers will still be delivered as normal. Our servers support the SRS (Sender Rewriting Scheme) feature, which allows messages to be routed from our server to an external service despite SPF checks.
Editing the SPF record
Sometimes, however, the SPF record needs to be customised to suit your needs.
The SPF record may need to be modified, for example, if outgoing mail servers of an Internet service provider are used or if e-mail messages are sent on behalf of the domain via an external service.
When emails are sent on behalf of the domain from external servers, the SPF record must be modified to ensure that these emails are delivered normally.
The SPF record must always be corrected by the sender. In other words, the recipient of the email cannot correct the SPF record by editing the SPF record of his/her domain. Only the sender can correct the SPF record by editing the SPF record of his own domain.
The video shows how to add your Internet service provider's outgoing mail servers to the SPF record from the "Email deliverability" section of the control panel.