Sender Policy Framework, or SPF, is a validation system, that is employed to stop the so-called email spoofing where an email message is sent from one address, but to seem as being sent from a different one, usually with the objective to fraud the recipient in some way. When SPF protection is enabled for a domain name, a unique record is made for it in the Domain Name System and all the DNS servers worldwide have it. The record features all the mail servers that are allowed to send valid messages from an e-mail address part of the domain. When a message is sent, the first DNS server it goes to verifies the SPF record and when the sending server is permitted, the message is forwarded to the targeted receiver. In case, however, the sending server is not present in the SPF record for the particular domain, the message won't be sent and it will be discarded. When you employ this solution, it'll prevent third parties from sending spam e-mails which seem to have been sent by you.
SPF Protection in Shared Hosting
You can enable the SPF protection option for your domain names with a few clicks from the Hepsia Control Panel, which comes with all of our Linux shared hosting packages. This is performed from the section with the very same name and you'll be able to allow the protection for each domain hosted on our leading-edge cloud platform. Using a really handy interface, all you'll have to enter is the hostname of the mail server which will be accredited to send out messages from your email addresses and its IPv4 or IPv6 address. Of course, it is possible to add several servers as well, when needed. If your e-mails are taken care of on our end, you can also use an even more secure option by putting a limit that email messages can be sent only if your domain names include our MX records. This solution cannot be used when your site is hosted here, while the e-mails are with a third-party service provider. Either way, the SPF protection solution will significantly enhance your online security and stop other people from counterfeiting your email addresses.