Sender Policy Framework, or SPF, is a verification system, which is intended to prevent the so-called email spoofing where an email message is sent from one e-mail, but to appear as being sent from another, usually with the idea to fraud the recipient for some reason. When SPF protection is enabled for a domain, a special record is created for it in the Domain Name System and all of the DNS servers worldwide get it. The record contains all the mail servers that are allowed to send legitimate messages from an address part of the domain. When an e-mail is sent, the first DNS server it goes to checks the SPF record and if the sending server is authorized, the message is forwarded to the targeted destination. If, however, the sending server is not present in the SPF record for the specified domain, the e-mail message won't be sent and it'll be discarded. When you employ this service, it will prevent third parties from sending spam emails which look as if they have been sent by you.
SPF Protection in Shared Hosting
If you host your domain names in a shared hosting account with us and we handle the emails for them, you will be able to enable SPF protection for them with a few clicks inside your Hepsia Control Panel. The service is available in its own section where you can see which domain names are already protected. For the ones that aren't, you can enable the SPF protection solution and manage various 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 set a rule that emails can be sent only when your domain names have our MX records. The last solution is the most secure one, and it can be used if we handle the email addresses for your domain names and you're not using a different e-mail provider. The newly generated records will be activated within a day and nobody will be able to fake the FROM field in an email using your addresses.