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Hi barnesm6,<br />
<br />
Recipient filtering and tarpitting should keep you off those lists<br />
<br />
<a href="http://www.msexchange.org/tutorials/Sender-Recipient-Filtering.html" rel="ugc">http://www.msexchange.org/tutorials/Sender-Recipient-Filtering.html</a><br />
<br />
This will stop the NDRs from going out.<br />
<br />
As for spam, the above will stop a bit of that, but have a look at this about configuring the IMF -&gt; <a href="http://www.amset.info/exchange/imf.asp" rel="ugc">http://www.amset.info/exchange/imf.asp</a><br />
<br />
If that doesn't do it for you, then you will need 3rd party software, such as GFI or Vamsoft (both have 30 day trials)<br />
<br />
<a href="http://www.gfi.com" rel="ugc">http://www.gfi.com</a><br />
<a href="http://www.vamsoft.com" rel="ugc">http://www.vamsoft.com</a><br />
<br />
Hope that helps,<br />
<br />
-red
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Hi barnesm6,

Recipient filtering and tarpitting should keep you off those lists

http://www.msexchange.org/tutorials/Sender-Recipient-Filtering.html [http://www.msexchange.org/tutorials/Sender-Recipient-Filtering.html]

This will stop the NDRs from going out.

As for spam, the above will stop a bit of that, but have a look at this about configuring the IMF -> http://www.amset.info/exchange/imf.asp [http://www.amset.info/exchange/imf.asp]

If that doesn't do it for you, then you will need 3rd party software, such as GFI or Vamsoft (both have 30 day trials)

http://www.gfi.com [http://www.gfi.com]
http://www.vamsoft.com [http://www.vamsoft.com]

Hope that helps,

-red

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Too slowing typing though....ner<br />
<br />
Simon.
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My client is receiving a rediculous amount of spam and unfortunatley they have now been blocked by Spamhaus for apparently spamming. After looking into it, it looks like the problem is down to the server sending NDR's for undeliverable incoming mail back to the spoofed email addresses on the incoming message.<br />
<br />
I think I've configured things correctly to stop this happening but some step by step guide to confirm this would be useful.<br />
<br />
They are running SBS2003.
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My client is receiving a rediculous amount of spam and unfortunatley they have now been blocked by Spamhaus for apparently spamming. After looking into it, it looks like the problem is down to the server sending NDR's for undeliverable incoming mail back to the spoofed email addresses on the incoming message.

I think I've configured things correctly to stop this happening but some step by step guide to confirm this would be useful.

They are running SBS2003.

filter incoming messages

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.