SPF, which is short for Sender Policy Framework, is an email security system, which is employed to confirm if an email message was sent by a certified server. Using SPF protection for a given domain name will prevent the faking of email addresses made with the domain. In simple words: enabling this function for a domain name generates a special record in the Domain Name System (DNS) containing the IP addresses of the servers which are allowed to send e-mails from mailboxes under the domain. The moment this record propagates worldwide, it will exist on all of the DNS servers that direct the Internet traffic. Whenever some email message is sent, the initial DNS server it goes through checks whether it originates from an approved server. If it does, it's forwarded to the destination address, however when it does not come from a server part of the SPF record for the domain, it is rejected. In this way nobody will be able to mask an email address then make it appear as if you're distributing spam messages. This approach is also known as email spoofing.
SPF Protection in Cloud Website Hosting
When you host your domain names in a cloud website hosting account on our end and we manage the emails for them, you'll be able to activate SPF protection for any of them with a couple of clicks in your Hepsia Control Panel. This service can be found in a section of its own where you are able to view which domains are currently secured. For those that aren't, you can activate the SPF protection option and manage a variety of things during the process - the hostnames of the mail servers that are permitted to send messages from your e-mail addresses, the IPv4 and IPv6 addresses of the servers, and even to create a rule that emails can be sent only when your domains include our MX records. The last solution is the most secure one, but you can use it if we handle the emails for your domain names and you're not using another email supplier. The newly created records will propagate within a day and nobody will be able to fake the FROM field in a message with your addresses.