$ telnet `host -t mx microsoft.com|perl -pi -e '$_=(split)[-1]'` 25
Trying 216.32.181.22...
Connected to mail.global.frontbridge.com.
Escape character is '^]'.
220 mail105-wa4.bigfish.com ESMTP Postfix EGGS and Butter
$ telnet `host -t mx microsoft.com|perl -pi -e '$_=(split)[-1]'` 25
Trying 216.32.181.22...
Connected to mail.global.frontbridge.com.
Escape character is '^]'.
220 mail105-wa4.bigfish.com ESMTP Postfix EGGS and Butter