Create an SPF record
Log in to the control panel for your domain DNS host.
Create a TXT record with the following specifications.
v=spf1 include:emailsrvr.com ~all
In addition to validating the original source of the message, these signatures ensure that the message has not been altered in transit by any third parties.
Decide how you want to enforce SPF failures.
~allwill result in a soft fail (Not authorized, but not explicitly unauthorized).
-allwill result in a hard fail (Unauthorized).
?allis neutral (As if there is no policy at all).
Enter your choice after v=spf1 include:emailsrvr.com, and then save your changes.
Authorize additional mail servers by adding their IP or server name after include:.
- For example:
Type Hostname Destination TTL TXT @ v=spf1 include:emailsrvr.com include:othermailer.com ~all 3600
Save your changes.