DKIM and SPF authentication

DKIM and SPF authentication is used as a way of checking if incoming emails are spam or from a fake address or sender. It’s a way of protecting the recipient. If an email fails these checks it’s likely to end up in the spam or junk mail folder. Follow this guide to authenticate your domain.

Increase the chance of getting your email through
By authenticating your domain you increase your chances of reaching through and getting your email read.

Read this first

You will need to make some account changes with the DNS settings of your provider. If you don’t know who provides your DNS settings, get in touch with your hosting supplier.

If you’re not sure about any of this and have an IT contact who can lend a hand, drop them a line and share this link with them.

The tasks you’re about to do

To authenticate your domain you’re going to need to do a little copying and pasting from Minutemailer into your domain provider’s zone editor or cPanel, as it’s sometimes called. You’re also going to need to complete a couple of tasks in Minutemailer. Here’s a quick overview of the process you’ll do:

  1. Verify your email address on
  2. Copy and paste three bits of information from Minutemailer to your Domain provider’s control panel or settings

The easiest way to do all this is open Minutemailer in one browser tab, and your cPanel or zone editor in another. Then just switch from one to the other.

1. Verify your email address on

Before you do anything, you’ll need to verify your email address in Minutemailer’s settings. If you’ve signed up properly, you’ve probably already done this by responding to the email we send all our new users.

2. Copy and Paste your DNS settings

Once you’ve done that head to Settings and select Email. Scroll to the bottom of the page to the section named Authenticate email domains and click the Authenticate button next to your domain. Read the text and click Authenticate domain.

Example of DNS records that you should copy and paste to edit your domain’s DNS record.

In your domain’s settings/control panel you’re going to want to “add a dns record” (the phrasing varies from domain supplier to supplier). Once you’ve found it and clicked it, return to Minutemailer.

In the Minutemailer pop-up you’ll see three columns. Subdomain, Type and Value.

  1. In your domain’s Host or Subdomain box, copy and paste the text in the first line of the Minutemailer pop-up Subdomain column. Depending on your DNS host you might need to keep or remove your domain from the text, to make it work.
  2. Type will normally be a dropdown menu in your domain’s settings. Set that too CNAME.
  3. In the Value box, copy the text in the first line of the Value column.
  4. Click add/save/done once all three fields have been changed or edited.
  5. Repeat steps for the remaining two lines in Minutemailer’s pop-up box.
  6. Return to Minutemailer and give yourself a pat on the back. It can take up to 24 hours for the changes to kick in but usually it goes much faster than that. You’ll see ‘Authenticated’ in your Minutemailer Email Settings when everything’s complete.
It should look like this when everything is set.

Do you still have problems with email that don’t get through or end up in the spam folder? Read our guide to spam filters.

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