Tencent corporate mailbox addition record

Tencent corporate email address: https://exmail.qq.com/
It is still in beta version, and is relatively stable for large enterprises.
The following is the domain name resolution and addition process:
1. Enter your domain management panel. I use the free freedns.ws

2. Add domain name in Tencent corporate mailbox

3. To verify domain name ownership, Tencent provides two methods. You can choose according to your own situation. We recommend uploading files, which is fast!
Domain name cname verification is slow.

4. Add MX records in the domain management panel

5. Then start managing and using it