Change your relay setting to "Relay mail for Addresses" and that will close up your server.  The way you have it set now, it allows anyone claiming to have a locally hosted address to send E-mail, and that's quite simple to forge.  You will need to list your local IP space in the address dialogue and/or set up your mail clients to use SMTP AUTH.  Ipswitch's site should have articles about this in their knowledge base under "open relay."

Matt



Chris Ulrich wrote:
For some reason, we've been blacklisted on ORDB. 

We're on 7.08 and haven't changed any settings in ages.  We're very tight on relay settings.

They report:

-----------------------------------------------------------------------------------
Return-Path: <[EMAIL PROTECTED]>
X-Original-To: [EMAIL PROTECTED]
Delivered-To: [EMAIL PROTECTED]
Received: from mail.cydian.com (emailconfig.cydian.com [208.34.50.132])
        by
bockscar.ordb.org (Postfix) with ESMTP id F2189557C
        for
<[EMAIL PROTECTED]>; Tue, 20 Apr 2004 13:24:53 +0000 (GMT)
Received: from localhost.localdomain [212.242.88.2] by mail.cydian.com
with ESMTP
  (SMTPD32-7.07) id A49B8C009C; Tue, 20 Apr 2004 09:24:43 -0400
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
X-ORDB-Envelope-From: [EMAIL PROTECTED]
X-ORDB-Envelope-To: [EMAIL PROTECTED]
Subject: ORDB.org check (0.7097115109686880.8643653302) 
ip=208.34.50.132
Message-Id: <[EMAIL PROTECTED]>
Date: Tue, 20 Apr 2004 13:24:53 +0000 (GMT)
  
-----------------------------------------------------------------------------------


Obviously, they're sending as "[EMAIL PROTECTED]"


My question is how?

This account not only has a long cryptic password, but is disabled.

I know I can't delete the account.

On the admin screen, I've checked: User Cannot Change Password, Account is Disabled, and Hide from Information Services.

Not checked: User cannot modify LDAP attributes, allow web access, host administrator, list administrator, imail system administrator


On SMTP security, I have slected:
---------------------------------
* relay for local users only

and checked:
---------------------------------
allow remote mail to local groups
refuse null() senders
check valid sender
auto-deny possible hack attempts
disable SMTP-VRFY command

and not checked:
---------------------------------
allow remote view of local groups
disable SMTP-AUTH reporting

Am I missing anything?

Does anyone have any ideas on this?  I'm getting irate calls from customers whose email are getting bounced, and from what I can see, it should be config'd correctly.

Thanks!

Chris
                

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