Question 1

What is an SPF record and why do I need one?

Accepted Answer

An SPF record is a DNS TXT record that lists which mail servers are allowed to send email for your domain. It helps receiving mail systems verify that messages claiming to come from your domain are authorized. Using SPF can reduce email spoofing and improve deliverability for legitimate messages.

Question 2

How do I add the generated SPF record to my domain?

Accepted Answer

Copy the SPF string from this tool and add it as a TXT record in your domain's DNS settings. Your DNS provider usually lets you set the host name, record type, and TXT value. After saving the record, allow time for DNS changes to propagate before testing email authentication.

Question 3

Can I include multiple IP addresses or hostnames in one SPF record?

Accepted Answer

Yes, one SPF record can include multiple IP addresses and hostnames. You can combine mechanisms and authorized senders in a single TXT record. Keep the record within DNS length limits and make sure you publish only one SPF record for the domain.

Question 4

What do the different SPF mechanisms like 'include', 'a', and 'mx' mean?

Accepted Answer

The include mechanism authorizes another domain's SPF record, the a mechanism authorizes the IP address of your domain's A record, and the mx mechanism authorizes the servers listed in your MX records. These mechanisms let you grant sending permission to different mail sources without listing every server address manually.

Question 5

What happens if my SPF record is not correctly configured?

Accepted Answer

If SPF is misconfigured, legitimate emails may fail authentication or be marked as suspicious. This can hurt deliverability and make it harder for recipients to trust your messages. An incorrect record can also weaken protection against spoofed email, so it is important to validate the final TXT record before using it.

SPF record generator

SPF record generator

Discover More Free Tools

Frequently Asked Questions