Using SMTP Engine from outside the network

From: "Bryan" <mjtech@xxxxxxxxx>
To: exchangelist@xxxxxxxxxxxxx
Date: Sun, 15 Jan 2006 19:10:15 -0700

Hi all,

I was working on a batch file to make it run ipconfig /all create a text
file with the result and email it to me.
While working on it I discovered that I was able to use our SMTP engine
from outside without any authentication, like this:

commail.exe -host=ServerName.DomainName.com -from=MyEmail1@xxxxxxxxxxxxxxx
-to=MyEmail2@xxxxxxxxxxxxxxx

Is this normal?

How can I secure it so it would only be used by authorized personels.

Thanks

Using SMTP Engine from outside the network

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