"This guide describes how to set up a full email solution in
Debian Linux (all code is from Debian Etch). I was asked to design
a secure, scalable, portable solution for a small company. While
the guide references many 'servers', the company only had 4
physical machines, Xen was used to virtualize the entire solution.
That particular aspect of the system is not discussed in this
guide, although I will try to get it into the next revision.
"Just a note on the server names used below: If it doesn't need
to be accessed by the internet, don't let it be. Domain names
ending in internal.example.com are internal NIC/IP Addresses...
there is no way to access them directly from the internet, nor
should there be..."
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