What is SPF?
SPF or Sender Policy Framework is a system in place to reduce the amount of spam that is received by mail servers.
It works by editing the DNS records to specifically authorise who can send email for a domain. An example of this record is below:
|example.com||IN||TXT||"v=spf1 a mx include:relay.mailchannels.net -all"|
You can validate and check SPF records at this link.
How to Update
To update the SPF records for your domain, you will need to login to the DNS management for whoever is hosting your DNS records.
You can check who is hosting your DNS by searching for your domain at the following website. (Your DNS host is listed as the 'nameserver' for your domain.)
If your DNS is being hosted with Crucial, you can make these changes via Cpanel. We have a guide available for this if required.
If your DNS is not being hosted with Crucial, as long as your current provider is using cPanel you can use the guide above to make the changes.
If you are not sure if your DNS host is using cPanel, or if they aren't, we would recommend getting in contact with your DNS host for further instructions to update DNS.