从:11.12.13.14 $ telnet alln-mx-01.cisco.com 25尝试173.37.147.230 ...连接到alln-mx-01.cisco.com。逃脱字符是'^]'。220 alln-inbound-e.cisco.com esmtp helo mail.sender.com 250 alln-inbound-e.cisco.com邮件发出: 250 sender admin@sender.com> rcpt to: 250 coce.com> 250 coteent indry test test test:test:一个(用户1)user1@cisco.com