Jason Drage <[EMAIL PROTECTED]> wrote:

> Hi All, I'm having trouble locking down relaying and I can't see what
> I'm doing wrong.
> 
> I'm trying to configure the server to only send mail iff:
> 1. Sender is on mynetworks, or
> 2. Sender is authenticated
> 
> Everything else should be rejected but it isn't, and I can't see whats
> wrong with my config.

I just relayed mail to myself from your server.  Interesting header:

Received: from [10.0.1.198] (gateway [192.168.1.1])
        by mail.ibsglobalweb.com (Postfix) with ESMTP id 5D1FD8FD55
        for <[EMAIL PROTECTED]>; Thu,  7 Aug 2008 10:55:05 +1000 (EST)
                    
I can't be sure, but I suspect something is happening to packets (perhaps 
due to your firewall/NAT configuration) before they hit Postfix, such 
that it thinks all mail is arriving from 192.168.1.1.  I relayed from two 
different locations and each time your system thought mail arrived from 
that same internal gateway IP.

-- 
Sahil Tandon <[EMAIL PROTECTED]>

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