Sender Policy Framework, or SPF, is a validation system, that is designed to prevent the so-called e-mail spoofing where an e-mail message can be sent from one e-mail, but to appear as being sent from another, frequently with the idea to fraud the recipient for some reason. When SPF protection is enabled for a domain name, a unique record is made for it in the Domain Name System and all of the DNS servers globally have it. The record contains all the mail servers that are permitted to send authentic messages from an address within the domain. When an e-mail is sent, the first DNS server it goes to verifies the SPF record and in case the sending server is authorized, the message is sent to the target destination. In case, however, the sending server is not included in the SPF record for the particular domain, the e-mail message will not be sent and it'll be removed. When you use this service, it will prevent third parties from sending spam that seem to have been sent by you.
SPF Protection in Cloud Website Hosting
If you host your domain names in a cloud website hosting account with us and we handle the e-mails for them, you'll be able to activate SPF protection for any of them with several clicks inside your Hepsia Control Panel. This service is accessible in a section of its own where you can view which domains are currently protected. For those that are not, you will be able to enable the SPF protection service and configure various things during the process - the hostnames of the mail servers that are permitted to send messages from your e-mails, the IPv4 and IPv6 addresses of these servers, and even to create a rule that email messages can be sent only when your domains use our MX records. The last mentioned option is the most secure one, and it can be used if we manage the emails for your domain names and do not use another email provider. The new records will propagate within one day and nobody will be able to forge the FROM field in an e-mail using your e-mail addresses.