Hi I hope you can point me in the right direction with this one.
I have setup qmail, qmail-scanner and courier imap on a test server, what we
need to be able to do is only allow certain users access to external e-mail
i.e. they can only send internally by default unless we let them do
otherwise.
To further compound this I need to be able to setup 3 additional servers on
our WAN for e-mail to our branch offices.
I was thinking that by assigning sub domains to the e.g. office1.domain.com
etc... This would enable this to happen via DNS MX records. I would propose
to have one system as the server that sends & receives all mail from the
internet acting as a gateway for our internal network, scanning for viruses
using qmail-scanner and mapping email for the few real e-mail address to
their internal ones. But I am not sure how to limit only certain users to
send mail outside whilst allowing unlimited e-mail internally i.e. across
our WAN!
Any advice would be greatly appreciated.
Iain Morrison
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