On Mon, Feb 02, 2004 at 12:49:26PM -0500, Bowie Bailey wrote:

> At the moment, my Courier server does not allow smtp connections from
> the Internet.  What I want to do is allow my users to send mail through
> my server via authenticated smtp.  But I don't want any chance of other
> mail bypassing the filtering server.
> 
> There's not going to be an MX record for the Courier server, but if it
> accepts smtp connections from the Internet, then I have to assume that
> the spammers will eventually find it.  I know that a non-authenticated
> connection will not relay, but I don't want spam sent to my users
> either.  So I'm trying to configure it so that it only accepts what is
> absolutely necessary.
> 
> Authenticated smtp should be allowed for anyone.
>      -- This is default and not a problem.
> 
> Non-authenticated smtp should be allowed only for the filtering server
>      -- This is what I am trying to figure out.
> 
> If I set AUTHREQUIRED=1, then how do I allow the filtering server to
> connect without authentication and without being able to relay?

Add:

1.2.3.4<tab>allow,AUTH_REQUIRED=0

to smtpaccess.

> If I set AUTHREQUIRED=0, then how do I deny non-authenticated
> connections from anyone except the filtering server?

-- 
Anand Buddhdev


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