Inner-/Outerspace? How to determine?

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Author: Andreas Fatum
Date:  
To: exim-users
New-Topics: Re: several messages
Subject: Inner-/Outerspace? How to determine?
Hi there,

though I read through the documentation (I even printed it ;-)
I have some questions. I want to achieve the follwing:

1) Users from outside must not be able to use the mailserver as
a relay. (Just abuse it to post a bunch of bulkmail to other
sites from there)

2) Mail to certain recipient-addresses should be rejected, when
coming from outside, (inside we use 5 domains, a class B- and
several class C networks, private namespace mostly) but should
be allowed to mail to from inside. How can this be achieved and
how can I determine wether a mail is from "inside" or "outside"?
(Filters?)

3) The users xxx, yyy and all users from @innerdomain2.de must not
be able to mail outside (into the internet) but should be able
to mail to the internal domains)

I'd be glad if someone could help me here or point me to some sample
configurations.

Regards,
Andreas


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