SPF, which means Sender Policy Framework, is an e-mail security system, that is used to verify whether an e-mail message is sent by a certified server. Employing SPF protection for a domain will prevent the forging of emails generated with the domain. In layman's terms: enabling this feature for a domain makes a specific record in the Domain Name System (DNS) which includes the IP addresses of the servers which are permitted to send email messages from mailboxes using the domain. As soon as this record propagates worldwide, it exists on all of the DNS servers that direct the Internet traffic. Whenever some e-mail message is sent, the initial DNS server it uses verifies whether it comes from an accredited server. If it does, it's forwarded to the destination address, however when it does not originate from a server listed in the SPF record for the particular domain, it is rejected. Thus nobody will mask an e-mail address to make it look as if you're sending spam. This technique is also termed email spoofing.
SPF Protection in Shared Website Hosting
When you host your domains in a shared website hosting account on our end and we handle the e-mail addresses for them, you'll be able to enable SPF protection for any of them with a couple of clicks inside your Hepsia Control Panel. The service is available in a separate section where you can see which domain names are already secured. For the ones which aren't, you can enable the SPF protection solution and set up numerous things during the process - the hostnames of the mail servers that are allowed to send messages from your email addresses, the IPv4 and IPv6 addresses of these servers, and to create a rule that email messages can be sent only if your domain names use our MX records. The last mentioned solution is the most secure one, but it can be used in the event that we manage the e-mail addresses for your domain names and you're not using a different e-mail provider. The newly created records will be activated within 1 day and nobody will be able to forge the FROM field in an email using your addresses.