Restricting email to local only in and out for student users... ?

So I don't know if my Googling skills are dissipating or what, but I can't seem to find anyone out there that's trying to accomplish the same thing I am... The school I manage IT stuff for currently shares an ancient PowerMac G4 based FirstClass email server with another nearby school. The two campuses are becoming less related financially and otherwise, and I hate dealing with the very MacOS-6-ish FirstClass nonsense anyhow. I'm trying to replace the Calendar and Email functionality of FirstClass with the built in stuff in Leopard Server. Right now my main hurdle is limiting the kids so that they may only email other kids and teachers and NOT get or send email to or from external sources. The teachers need to be able to communicate with the outside world, but not the kids. It seems like there ought to be a simple way to accomplish this, but I'll be darned if I can see it anywhere. Help?
Just as an FYI I have the Mail service running just fine right now. All the MX records and DNS stuff is doing it's thing. Thanks!

It is possible to configure mail services to apply pretty much any restrictions you need. However, you will need to manually edit the postfix configuration files as this cannot be done through the GUI.
There is many ways of accomplishing this. You can work with sender/recipient maps or transport maps.
For starters, have a look here:
http://www.postfix.org/postconf.5.html
checkrecipientaccess, checksenderaccess, transport_maps are some of the parameters to look at.
HTH,
Alex

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null

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Restricting email to local only in and out for student users... ?

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