Re: Trying to create a (odd ball) internal only & a external allowed .

From: Mr. James W. Laferriere (babydr@baby-dragons.com)
Date: Sun Sep 10 2000 - 10:40:43 EST


        Hello Semat ,

On Sun, 10 Sep 2000, semat wrote:
> You do not need to use the access database. Simply set inside's smart
> relay host to in&out and then on in&out do not allow relaying just not
> putting anything in access and relay domains should solve this. thus
> inside will be able to send mail to in&out but not to the outside since it
> will say relaying denied.
        I'll definately give this a try . But ... I don't see how I can
        keep all the users addresses in the same domain ?
        ie: joey@fictitous.com (on 'in&out')
                joseph@fictitous.com (on 'inside')
        If I use an entry in the aliases file then 'inside' can be reached
        from 'The World' . This 'easily' bypasses any of the Spam
        prevention techniques I have (tried) using . It appears that
        the forwarding done in the aliases file happen well before the
        actions in the spam filters .
        
        I can see that I left another wonderful item out of the setup
        below . All the users are using either Internet exploder or
        PC-pine for accessing their email using imap . All access to
        'inside' is from known ip's . Access to 'in&out' may be from
        unknown ip's . IF I don't put the users machines ip's into either
        of the access/relay files on 'in&out' They can nolonger send email
        to 'The World' ie: relaying denied .
        Thus I already have something in the access &/or relay files .

> On Sun, 10 Sep 2000, Mr. James W. Laferriere wrote:
> > Hello All , I am having a bit (to put it mildly) of trouble with
> > trying to create two systems . One which users will have access
> > to external email & internal , the others will have access to
> > internal only . my setup is something like this . all ip's
> > are fictitous .
> >
> > ------------------------------------- -------------------------
> > | | | | |
> > [ inside ] [ in&out ] [ router ] [ The World ]
> > ( smart host )
> > 10.0.0.1 199.33.245.7
> > Not Routeable Routeable
> >
> > - 'inside' can send email to 'in&out' .
> > - 'in&out' can send email to 'inside' .
> > - 'in&out' can send email to 'The World' .
> > - 'The World' can send email to 'in&out' .
> >
> > - 'inside' cannot send email to 'The World' .
> > - 'The World' cannot send email to 'inside' .
> >
> > - All users must have addresses in the same domain .
> > ie: joe@ficticous.com
> >
> > At present:
> > - 'in&out' is the primary (smart) mailer for the domain .
> > - 'inside' points all mail that it doesn't know how to handle to the
> > smart host 'in&out' .
> >
> > I have tried several sendmail 'access' database permutions on the
> > 'smart host' to no avail . If I attempt to reject mail from
> > 'inside' it can nolonger send email to 'in&out' . You can guess
> > how the rest of the permutations I have tried have gone .
> >
        All helpful insights are welcome . Tia , JimL
       +----------------------------------------------------------------+
       | James W. Laferriere | System Techniques | Give me VMS |
       | Network Engineer | 25416 22nd So | Give me Linux |
       | babydr@baby-dragons.com | DesMoines WA 98198 | only on AXP |
       +----------------------------------------------------------------+

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This archive was generated by hypermail 2b29 : Fri Sep 15 2000 - 21:00:29 EST