For example, selecting the CA [Canada], US [United States], and MX [Mexico] check boxes in the list would block messages from e-mail addresses that end in. Ca,. Us, and. Mx.

• 例如；选中列表中的“CA[加拿大]”、“US[美国]”和“MX[墨西哥]”复选框将会阻止来自以.；ca、