This article is meant for those who already have a domain successfully registered with Wix. You'll need this registration as long as you use the domain name, even when you authenticate it with MailerLite.
How to add a domain to your account
Head to the Account settings page and click the Domains tab.
Under Sending domains, click Add domain.
Enter the email address you wish to use to send emails from and click Save.
Verify your email address with the confirmation email we send you, or immediately authenticate your domain to automatically verify your email.

5. Once the domain has been added, click on the Authenticate button. A window will appear containing Name and Value fields your DKIM and SPF records. Copy these fields and keep this page open.

How to access the DNS zone page on Wix
Head to Wix and navigate to your Dashboard page. Make sure you select the website that you would like to authenticate.
On the left-hand sidebar, click on Settings and then select Domains.
On the section of the domain you would like to authenticate, click on the three dots to the right, and select Manage DNS Records from the dropdown menu.

How to add the DKIM record
On the Manage DNS Records page, click on + Add Record under the CNAME section.
In the Host Name field box, add
litesrv._domainkey
only. Do not add the name of your domain since this is already automatically included in the record.In the Value field box, paste the DKIM Value text that is given to you in your MailerLite account.
Leave the TTL at one Hour.
Click Save.

How to add the SPF record
On the Manage DNS Records page, click on + Add Record under the TXT (Text) section.
Unless you're adding a subdomain, leave the Host Name field box empty as the name of your domain is already automatically included in the record.
In the Value field box, paste the SPF Value text that is given to you in your MailerLite account.
Leave the TTL at one hour.
Click Save.

Note: Do not add the SPF record in the SPF section of the DNS page on Wix, otherwise our server won’t be able to recognize the SPF record.
How to get the DKIM and SPF records approved
Head back to your MailerLite Domains page and click on the green Check DNS records button on the domain authentication window. Once both records are approved, your new domain will be displayed as Authenticated ✅.
In some cases, it may appear that one or both records were not approved even if all of the information was correctly submitted.
There are 2 reasons why this happens:
It can take the servers up to 24 hours to completely update this information. Most of the time, however, it is approved and updated in a matter of minutes.
Some information has to be re-checked and updated.
Troubleshooting steps if authentication isn’t working
Even if you think you are sure you set up the information correctly, we suggest that you follow the troubleshooting steps below, just in case.
DKIM record is not approved
If the DKIM record fails:
Check that you have typed
ml._domainkey
only (without your domain) in the Host field as Wix automatically includes your domain name.Check if both Value fields are exactly the same as they’re case-sensitive. If you’re unsure, you can compare both texts here.
SPF record is not approved
There are 3 reasons why an SPF record is not approved:
SPF records don't match
SPF Name record field must be left empty
More than one SPF record was found
SPF records don’t match
Check that the Host is
@
and not your domain.Check if the Value field on your Wix DNS page is exactly the same as the one on your MailerLite Domains page. They have to be identical as they are case-sensitive. The record won’t be approved otherwise. You can use this site to compare both texts.
SPF Name record field must be left empty
In Wix, when your domain is meant to go in the Name field of a record, it should be replaced with @
. Use @
as the Name field for the TXT record.
More than one SPF record was found
It’s only possible to have one SPF record on your DNS zone. If you have more than one, they need to be merged.
In the picture below, there are two different TXT records for SPF. Both of these need to be merged into one single record.

In some cases, MailerLite can automatically detect and merge multiple SPF records. If you receive an error exclaiming that you have more than one SPF record:
Refresh the page.
Re-click Check DNS records.
Examine your SPF value record to determine whether or not it has been merged.
Before merging, the SPF value record will look something like this:
v=spf1 a mx include:_spf.mlsend.com ?all
After merging, the SPF value record will contain more than one instance of the word include
.
Here is an example of a merged SPF record from MailerLite and Outlook:
v=spf1 a mx include:_spf.mlsend.com include:spf.protection.outlook.com -all
Note: If the method above is not working for you, take a look at our article How to merge SPF records.
Before setting up the new merged SPF record, it’s important to:
Remove all of the current SPF records on your Wix DNS zone, including the original one from MailerLite that is not merged.
Add a new TXT record with the merged SPF record.
Go back to your MailerLite Domains page and click on the green Check DNS records button.
An error may still come up even after setting up the merged SPF record in the DNS zone. Don’t worry if this happens. Remember that servers can take up to 24 hours to completely update this information. Most of the time, however, it’s approved within a few minutes to a few hours.
You can check if the SPF record is correctly set up using this third-party tool.
If you have any questions, contact our friendly support team and we will gladly assist you.
Please note: While we’re happy to help with any issues taking place on our end, our expertise may be limited when it comes to third party apps since we cannot access your accounts with those tools, even if they are connected to your Mailerlite account. This limits the support we can offer, so we encourage reaching out directly to the support team of those third-party tools for better assistance.
In this case, Wix support page can be found here.