Set up mail-in-a-box for existing website
It's a very good tutorial, I managed to make my web mail running.
But, I had to change the nameservers on my registrar to the glue records:
From the original digital ocean name servers:
Now in the tutorial there is a quote about this situtation:
"If you do have an active website at your domain, make sure to set up the appropriate additional DNS records on your Mail-in-a-Box server. Otherwise, your domain won't resolve to your website. You can copy your existing DNS records to make sure everything works the same."
But what exactly do I do? I need to get more accurate instructions because the original website is not working now.