It's a type of DNS record that notifies the recipient's mail host which mail servers are authorized to send email from your domain name, making it much more difficult for someone to spoof your email address trying to impersonate you. On our VPS and Dedicated hosting plans, email is sent out directly from the server. Here is an example of what the default SPF record would be for a server at This is the part of the record where you can add IP addresses and include SPF rules for other domains. Third-party email marketing tools often require that you update your SPF record to accommodate their servers. There are a few modifies you can use here: -all "Hard Fail" means reject all mail that isn't on the allowed list. If you're using another host to send email for your domain, customize your SPF record by adding additional servers and IPs to the second part of the record. And if you want to make your record more strict to defend the domain from email spoofing, adjust the policy for "all.
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Using SPF Records with VPS and Dedicated Hosting
Spam is flooding the Internet with many copies of the same message, unsolicited commercial email Toggle navigation. Billing and Sales. IP Spoofing. IP Spoofing is a technique used to gain unauthorized access to machines, whereby an attacker illicitly impersonate another machine by manipulating IP packets. IP Spoofing involves modifying the packet header with a forged spoofed source IP address, a checksum, and the order value. Internet is a packet switched network, which causes the packets leaving one machine may be arriving at the destination machine in different order. The receiving machine resembles the message based on the order value embedded in the IP header. IP spoofing involves solving the algorithm that is used to select the order sent values, and to modify them correctly.
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