Where did you get the domain for WIX?


You will need to follow this article in order to set up your nameservers so they are not managed by WIX.

https://support.wix.com/en/article/dns-records-needed-to-connect-your-domain-to-wix


Change the nameservers here:



And then choose I will use GoDaddy Nameservers


Go to this article and copy the record here to add to your DNS records:

https://support.wix.com/en/article/dns-records-needed-to-connect-your-domain-to-wix


Hit Edit pencil button on the right


Paste the A record here:



Edit the original CNAME record and Paste the wwwXX.wixdns.net record here:


Go to https://dnschecker.org/


Put yourdomain.com (A record) and search to see if it's working:


Put www.yourdomain.com (CNAME record) and search to see if it's working:



Put yourdomain.com (NS record) and search to see if it's working:



Go to your website yourdomain.com and see if your website is working.


Now you can set up Mailgun in your domain provider's DNS records following these articles!

Step-by-step guide to set up Mailgun

How to Set Up a Dedicated Sending Domain (LC Email)