How to configure Exchange 2007 to prevent spam relay

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I just installed MS Exchange 2007 and configured the Receive Connector
(Default <server name>) to receive mail from ANY remote servers (IP address
0.0.0.0 - 255.255.255.255). The problem lots of spammer will then use my
Exchange server to relay their spam and as a result will use up most of the
resources. I have set the Permission Groups to Exchange Users & Exchange
Servers but spam email still use a large amount of system resources.

Can someone show me what to do to solve this issue? I have though about
configuring Exchange so that relay email can't be send to external domain but
not sure how to do it. The other problem with this method is that spammers
can still send spam emails to our internal users. Can someone please let me
know what to do to fix this?
.

Relevant Pages

  • Re: Why am I not allowed to relay form a compuer that is in the same domain as my exchange server
    ... Exchange does not have a Recipient Policy for. ... Exchange has a Recipient Policy - without having to allow relaying ... authenticate to relay, regardless of the list above is selected" ... member of the same domain as my exchange server I get relay denied.. ...
    (microsoft.public.exchange.admin)
  • Re: Anti-spam Appliances and the Junk Mail Folder (Exchange 2003)
    ... I am also on the premise of keeping spam mail off the Exchange Server and off the WAN. ... If you use a third party filtering services such as Postini, Spam Soap, etc. the users Quarantine is kept on their servers outside your network and users then login through a Web interface to view their quarantine messages. ...
    (microsoft.public.exchange.admin)
  • Relay vo Exchange2k3
    ... Hierauf soll SPAM und Mailvirenscanner laufen. ... und SPAM und leitet dann die Mail an den Exchange weiter. ... eingetragen welche Server über diesen Relay senden dürfen. ... Ich empfange aus dem Internet Mails auf diesem Relayserver. ...
    (microsoft.public.de.exchange)
  • Re: Out of Office Auto Reply
    ... It all depends on your version of Outlook and if you have a Whitelist. ... I don't know about "all the types of spam" but you can experiment to see what works and what doesn't. ... | You will need exceptions - and hopefully your Exchange admin has put ... are not the ones to which those auto-responses get sent. ...
    (microsoft.public.outlook)
  • Re: Unable to relay to a.asn.au
    ... primary mechanism for telling Exchange to accept mail for any given domain. ... I understand that the 'relay' list is only for other ... it should accept mail for several internet domains? ... Our exchange server answers as exchange.c.net, ...
    (microsoft.public.exchange.admin)