IP protocol cannot confirm that the source address is the sender'saddress.
IP协议本身无法验证源地址段中的IP地址是发送者的IP地址。
2
You put the sender'saddress on the top left corner, and the receiver's address in the center.
你要在左上角写寄件人的住址,并在中间写收件人住址。
3
The Email object contains properties such as the sender'saddress, the recipient's address, a subject heading, and a message body, as shown in Listing 5.