Question : How to close an open relay on Sendmail?

Hi!  I'm new to Sendmail and have installed version 8.12.5 on a Redhat 8 machine.  It was installed using the RPM that came with RH.  Everything functions fine (as in I send and receive mail) but when I run a test here: http://members.iinet.net.au/~remmie/relay/
it says I have an open relay.  The server I am testing is mail.tmallow.com. My files are as follows:

sendmail.cf
commented out the line the line DaemonPortOptions=Port=127.0.0.1 so that Sendmail would listen on all devices

access
has the line "192.168.0" to allow my network to send mail

relay-domains is empty

local-host-names
has the line "tmallow.com" so that I accept mail for my domain.


As I stated I am new to sendmail so my asumptions about what these files do may be wrong.  Thanks alot.

tmallow

Answer : How to close an open relay on Sendmail?

If relay-domains is empty and you have only 192.168.0" you do not have a open relay MTA. Do not trust this http://members.iinet.net.au/~remmie/relay/