Spf records what is

Already have an SPF record? By itself, SPF can associate a piece of email with a domain. SPF has become exceedingly vital to help verify which sending infrastructure can relay email on behalf of your domain. Implementing SPF for email provides major benefits:. It allows you to quickly identify which servers are authorized to send on behalf of a domain. Though SPF is a layer of proven email authentication that has been around since the late s, it does have its challenges.

In this example, your email appears to be coming out of infrastructure that appears to have nothing to do with you. DKIM signing can survive forwarding. However, this ends up doing nothing if the company uses its own domain in the bounce address. Right now, the version should always be spf1 as this is the most common version of SPF that is understood by mail exchanges.

One or more terms follow the version indicator. These define the rules for which hosts are allowed to send mail from the domain, or provide additional information for processing the SPF record. Terms are made up of mechanisms and modifiers. The following mechanisms are defined:. A mail server will compare the IP address of the sender against the IP addresses defined in the mechanisms.

If the IP address matches one of the mechanisms in the SPF record then follow the result handling rule. Deliverability Services Ensure every email lands where it's supposed to.

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