This mechanism is different from virtual alias domains. Those are implemented by translating every recipient address into a different address. For that, see the virtual(5) manual page.

• 虚拟投递代理的机制不同于虚拟别名域。后者实现多域的方法是通过将每个接收者的地址转化为另一个不同地址。关于虚拟别名域的细节,请参考virtual(5)手册。