Sender Policy Framework, or SPF, is a verification system, that is designed to stop the so-called email spoofing where an email message can be sent from one e-mail, but to look as being sent from a different one, usually with the objective to scam the recipient in some way. When SPF protection is enabled for a domain, a unique record is generated for it in the Domain Name System and all DNS servers globally have it. The record contains all the e-mail servers that are allowed to send legitimate messages from an address under the domain. When an e-mail is sent, the first DNS server it encounters checks the SPF record and in case its sending server is permitted, the message is sent to the target receiver. When, however, the sending server is not included in the SPF record for the particular domain, the email message will not be forwarded and it'll be removed. If you employ this solution, it'll stop third parties from sending spam emails which seem to have been sent by you.
SPF Protection in Shared Web Hosting
If you host your domain names in a shared web hosting account with us and we handle the e-mail addresses for them, you are able to activate SPF protection for them with a few clicks in your Hepsia Control Panel. The service can be found in its own section where you'll be able to view which domains are currently protected. For the ones which aren't, you'll be able to activate the SPF protection option and configure a variety of things during the process - the hostnames of the mail servers that are allowed to send messages from your e-mail addresses, the IPv4 and IPv6 addresses of these servers, as well as to create a rule that emails can be sent only when your domain names include our MX records. The last option is the most secure one, but you can use it if we take care of the email addresses for your domains and do not use another email supplier. 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.