root@LYLE-PC:~# telnet xo2.x10hosting.com 25
Trying 198.91.81.4...
Connected to xo2.x10hosting.com.
Escape character is '^]'.
220-xo2.x10hosting.com ESMTP Exim 4.87 #1 Tue, 06 Mar 2018 10:29:04 -0500
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.