[tiwil]

As several people have commented, there is some complexity in the setup of dns and mail - it's great that these options are in place but it would be better if it was easy to get them to work. Hopefully whoever among us figures it out first puts up a good tutorial.

This what I do for mail server:
1. Issue a mail SSL certificate for one of your domain that you will use frequently for sending emails (Somehow after I did this it started working)
2. After SSL certifcate issued, restart the mail service and you now should be able to access Rainloop and creating emails.
3. Don't forget to update your DNS (if you're using 3rd party DNS service like Cloudflare), otherwise your email will end up in spam.

About the DNS server, I would suggest to turn it on because turning it off then on is very hard. I need to setup a few things which I already forget. Most likely your subdomain DNS will be listed in your main domain. I hosted a website where I only host the subdomain and the main domain somewhere else. I tried to add DNS multiple time but it doesn't show anything. I then add the main domain and all of my subdomain DNS that I added are listed there.

I also need help if someone figure it out how to properly input DKIM generated by Cyberpanel to Cloudflare. All my emails are coming to inbox (which is good) but none of them are signed by my server due to DKIM DNS errors.