[olug] Mail Relaying w/Filtering

[Andrew Holm-Hansen]

I don't know about filtering, but I know that you can configure your MTA 
to accept relays from a single (or multiple defined) host(s).  You can 
also force a password dialogue for that relay (over IMAPS even).  The 
relaying stuff isn't too bad.  I have a super simplified script (I 
downloaded it from astaticsolutions.com, however the website doesn't 
appear to host it any longer), that allows you to set up the sendmail 
relay with very little effort.  This is assuming you want to use sendmail.  

The script and necessary INSTALL help file is located at:  
einer.org/relay.tgz

The filtering stuff sounds like you just need milter, but I get the 
feeling that I'm missing a piece of complexity somewhere.  A descrption 
of what milter can do can be found at 
http://www.sendmail.com/partner/resources/development/milter_api/

Sounds like an interesting project.

Good Luck,

Andrew

Eric Penne wrote:

>I have project coming up in the next couple weeks for work that I don't
>have a lot of knowledge about.  We will be using Linux, so the good
>news is that I will be able to read/learn about it.  
>
>We have base stations out in the field that collect data from our
>system.  These base stations (linux based 386) have ethernet, serial,
>and modem connections.  The serial reads data from another module.  The
>ethernet and modem are used for communications with us.  The modem can
>dial into our service provider and email the data it has.  The service
>provider won't let us do the same thing through ethernet because it
>does not orginate from inside thier system (ie not from their modem
>pool).  We wnat to set up a mail relay system that we can use for all
>email communication (modem and ethernet).  Of course we don't want it
>to be open to the rest of the world.  Here is my question:  Can we set
>up a relay that can filter the mail so that it must conform to a
>specific format or have a specific identifier in it?
>
>Ideally we wouldn't have to base it on MAC address or anything so that
>we don't have to update the mail server everytime we send out new
>units.  We also might have other issues with the buyers firewalls but
>that will be addressed later.
>
>Later
>Eric
>
>
>__________________________________________________
>Do you Yahoo!?
>Yahoo! Web Hosting - Let the expert host your site
>http://webhosting.yahoo.com
>_______________________________________________
>OLUG mailing list
>OLUG at olug.org
>http://lists.olug.org/mailman/listinfo/olug
>  
>