Any special precautions needed to prevent open relay?

Hi, we turned on the mail server on our os x server 10.4.7 machine and have started learning how to setup and manage our email server.
Is there any special precaution / setup we need ot do to ensure we do not unwittingly become an "open relay" for spammers?
Or does the default behavior after an install take care of that?

greetings
postfix by defaultis not open for relay. The settings in your /etc/main.cf files will determine what is any other machines you will allow to relay.
mynetworks_style and mynetworks determine what other systems can relay.
set mynetwork_style to host to limit relaying to just your local machine. Add ip addresses to mynetworks to allow specific clients to use your smtp server.
hope this helps

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Hans,
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Message was edited by:
Carl Backstrom

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Any special precautions needed to prevent open relay?

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