登录华为邮箱管理员（地址:https://www.ppmail.com.cn/list_51，选择：华为云企业邮箱登录入口/管理员登录）

Log in as Huawei email administrator (address: https://www.ppmail.com.cn/list_51 , Select: Huawei Cloud Enterprise Email Login Portal/Administrator Login)

1、邮箱服务-域名管理，在域名列表里面找到需要添加域别名的域名，点右侧：添加域别名

Select: Email Service - Domain Management, find the domain name in the domain name list that needs to be added with a domain alias,
click on the right side: Add Domain Alias

2、输入域别名，提交，配置域名dns（具体可参考华为企业邮箱域名解析方法）,验证配置
Enter domain alias, submit, configure domain DNS (refer to Huawei Enterprise Email Domain Resolution Method for details), verify configuration

3、完成域别名配置后，该主域名下的所有用户，将增加一个以域别名为后缀的邮箱地址。

成员在登录邮箱后，在设置-个人信息中，自主切换主域名邮箱和域别名邮箱。写信时，也可切换发信地址。

After completing the domain alias configuration, all users under the primary domain name will have an email address with the domain alias suffix added.Members can also switch their email addresses under the main domain name and domain alias in the settings personal information section after logging into their email. When writing a letter, you can also switch the sending address.