Masq/network/email setup questions

Chuck Campbell (
Wed, 1 Sep 1999 14:55:07 -0500

I'd like to set up a firewall machine, using RH6. running ipchains.
In general, I have a pretty good idea of what needs to be done, but I've got
some other config issues I'm not sure where to start looking for info on.

I want to do the following:

1)Masquerade our net behind the firewall.
2)Provide for email in/out from a sendmail machine behind that firewall, or
on the firewall box.
3)Set up the machines on the net to use the email server for outbound email.
4)Set up the pc's to grab email from our email server (run pop server?).
5)Cover multiple domain email from this server (we have three to deal with).

My questions are:

Does the sendmail config cover all of this email stuff, or do I have to
find some virtual domain info somewhere?

I suspect the unix boxes sendmail configs will be relatively simple,
pass everything to the email server, which will pass it all out through
the firewall (there are suns which probably require a sendmail update?? and
linux pc's w/ rh5.2 and rh6). If each box adds the appropos domain, then
the email server doesn't have to do anything to outbound mail, right?

I guess each machine in the net will have to be in one domain only, or can
they be set up using uid info to determine the outgoing email domain?

On inbound email, all will come to the one server, and everyone will need
to read and/or grab their email from there. How do you set up the server
for multiple domains?


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