Exim: Is there away to block command when someone telnets to exim's port?
Email won't send out unless they authenticate, but if there a way to total block them from typing all together, but still allow the server to receive email?
IE, to block this:
$ telnet mydomain.com 25
Connected to mydomain.com.
Escape character is '^]'.
220-server1.myhost.com ESMTP Exim 4.69 #1 Sat, 25 Sep 2010 10:37:00 -0500
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.
250-server1.myhost.com Hello [127.0.0.1]
250-AUTH PLAIN LOGIN