Specifying MMDF authorizations
Control the flow of mail through your host
using MMDF authorizations.
You can authorize mail to be sent
from your host on specific channels, based on the
sending or receiving host,
the user who originates the mail, or both.
You can also authorize mail routed through your domain.
This form of authorization control (see
``Specifying host-based authorization''
is often used to ensure that hosts that are not part of
the site's private
network do not use that network to send mail to other parts
of the world.
For example, you can use host-based authorization to allow
mail to enter your domain, but restrict the mail passing
Control the flow of mail both to and from your host
and network using this form of authorization control (see
``Specifying user-based authorization''
For example, if your site is on the Internet,
you might want to allow
your employees (but no one else) to send mail from their home
machines through your system to the Internet.
In this case, you would want to set up MMDF to authorize mail
from employee users to pass through your machine, but prevent mail
from other users from passing through.
Keep mail that enters your domain from leaving your domain
using this form of authorization control (see
``Setting routing-based authorization''
Users in your domain can send mail
to people both inside and outside the domain,
but users outside
the domain cannot route mail through your domain
to another destination.
For example, if your domain includes machines in different cities
with links to different outside computers, people from outside
the domain might use these links to send mail from one city to
another, through your domain.
In this case, you can set up MMDF authorization to
prevent people from using your system to transfer mail.
Specifying host-based authorization
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003