Notes:After changing the domain name of your Alibaba Mail, you must configure DNS resolution for the new domain name. You can use email services only after the DNS resolution takes effect. Change the domain name of your Alibaba Mail (Standard)
Log on to the Alibaba Cloud console, click Products, click Domains & Websites to enter the Email page. On this page, click Manage on the right side of the target domain name to enter the Email Management page.
On the Basic Info tab page, click Change Domain Name.
Enter a new domain name, and then click Submit.
If the problem persists, contact Customer Support .