[AuckLUG] Restricting E-mail access for Children

[chris at archnetnz.com]

> "Chris Hodgetts" <chris at archnetnz.com> writes:
>
> Since you use postfix, use 'check_recipient_access' in the
> smtpd_recipient_restrictions section of main.cf, which will allow you to
> create your whitelist and then block everything else.
>
> That is a global setting, though, not per-user.

Not really ideal.. it needs to be a per user basis :(

> For that, though, you probably need a hand-written policy daemon to
> identify both the sender and recipient, and act on that.  The version of
> Postfix you have supports that, and writing a policy daemon isn't /that/
> hard.
>
> See the simple greylist example that Postfix ships, or that is on their
> website, for the Perl code.
>
>
> Blocking outbound mail from that one account is a much harder job than
> blocking inbound, though, as you note.  Most threat models with email
> assume that internal senders are at least semi-trusted.
>
>
> Perhaps if you outline why you want to do this there is a better way to
> achieve your goals overall?

I want do to this so that Children can have a restricted down e-mail so
that only approved e-mail can get to the child and they can only send to
approved e-mail addresses.

I have had a look at some clients, but they cost quite a bit (in $US) and
its not really worth it - and others make the child log into the hosts own
website -- would rather have *FULL* control..

Unless someone knows of a good Open Source client that can be locked down
to only allow approved e-mail to children, then that would be good.

So yeah... thats pretty about it :)

Cheers again......