Sender Policy Framework, or SPF, is a verification system, which is intended to prevent the so-called email spoofing where an email message can be sent from one address, but to appear as being sent from a different, typically with the idea to scam the recipient someway. If SPF protection is enabled for a domain name, an exclusive record is made for it in the Domain Name System and all DNS servers around the world receive it. The record contains all email servers that are permitted to send legitimate messages from an e-mail address within the domain. When a message is sent, the very first DNS server it encounters checks the SPF record and when its sending server is permitted, the message is sent to the target destination. If, however, the sending server is not included in the SPF record for the specified domain, the email message won't be submitted and it'll be discarded. When you employ this solution, it'll prevent third parties from sending spam messages that seem to have been sent by you.
SPF Protection in Website Hosting
When you host your domains in a website hosting account with us and we manage the emails for them, you are able to activate SPF protection for them with a couple of clicks in your Hepsia Control Panel. This service is accessible in a section of its own where you're able to view which domains are currently secured. For those which aren't, you can enable the SPF protection option and set up a number of things at the same time - the hostnames of the mail servers that are permitted to send messages from your emails, the IPv4 and IPv6 addresses of the servers, and to set a rule that email messages can be sent only if your domains use our MX records. The last mentioned option is the most secure one, and you can use it if we manage the e-mail addresses for your domains and do not use another e-mail service provider. The newly generated records will be activated within a day and nobody will be able to fake the FROM field in a message using your e-mail addresses.