[[email protected]:~]$telnet 100.7.41.110 25
Trying 100.7.41.110...
Connected to 100.7.41.110.
Escape character is '^]'.
220 WIN-MQIIAQ50HT1 ESMTP
EHLO inspur.com # EHLO 开启smtp会话,并向服务器提供客户机主机名
250 Hello.
AUTH LOGIN # 开启身份认证
334 dXNlcm5hbWU6
aGVsbG9AYWxpeXVuLmNvbQ== #base64编码后的用户名
334 UGFzc3dvcmQ6
5LiN5ZGK6K+J5L2g #base64编码后的密码
235 authenticated.
MAIL FROM: <:~]$telnet 100.7.41.110 25
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