Sender Policy Framework, or SPF, is a validation system, that is employed to stop the so-called email spoofing where an e-mail message is sent from one e-mail, but to look as being sent from a different one, generally with the objective to scam the recipient in some way. If SPF protection is activated for a domain name, a unique record is created for it in the Domain Name System and all the DNS servers worldwide get it. The record includes all email servers that are permitted to send legitimate messages from an address under the domain. When an e-mail is sent, the very first DNS server it goes to checks the SPF record and when its sending server is authorized, the message is forwarded to the targeted receiver. If, however, the sending server doesn't exist in the SPF record for the specified domain, the message will not be forwarded and it will be discarded. In case you employ this solution, it'll prevent third parties from sending spam messages which seem to have been sent by you.
SPF Protection in Shared Web Hosting
SPF protection can be enabled for every domain hosted in a shared web hosting account on our cloud hosting platform with only a couple of clicks. The option is available in the Emails section of our modern Hepsia Control Panel and all you need to activate it is to pick one of your domain names from a drop-down list and type in the hostnames plus the IPv4 or IPv6 addresses of the email servers which will be approved to send messages from your emails. As an additional option you can also restrict the messages to be sent from your domain name only if it includes our MX records, in other words when our servers handle the emails for it, not some third-party provider. This solution will give you the best degree of security, but it is not applicable in case only your site is on our servers while the email addresses for the domain name are managed in a different place. In either case, our SPF protection service will keep your email addresses safe from being used for spam or scam purposes.