$ nmap herbsofafrica.com
Starting Nmap 7.95 ( https://nmap.org ) at 2024-06-03 15:50 CDT
Nmap scan report for herbsofafrica.com (172.67.149.107)
Host is up (0.021s latency).
Other addresses for herbsofafrica.com (not scanned): 104.21.29.153 2606:4700:3032::6815:1d99 2606:4700:3030::ac43:956b
Not shown: 996 filtered tcp ports (no-response)
PORT STATE SERVICE
80/tcp open http
443/tcp open https
8080/tcp open http-proxy
8443/tcp open https-alt
Nmap done: 1 IP address (1 host up) scanned in 5.14 seconds
You only have a handful of ports open, and they don’t include any of the mail ports.
Are you behind Cloudflare or some other proxy thing or are you on a network connection that otherwise blocks mail ports? If so, you need to make that not so for mail addresses. You can’t run mail through Cloudflare (and you can’t run mail on a consumer network connection or on some cloud providers without jumping through some additional hoops).