A very common question I get very often in my presentations and workshops is about handling the suspended / failed messages.
The mechanism is very simple to use in BizTalk Server 2006 and very well documented at MSDN.
Using Failed Message Routing - http://msdn2.microsoft.com/en-us/library/aa578516.aspx
How to Enable Routing for Failed Messages - http://msdn2.microsoft.com/en-us/library/aa578574.aspx
Using Acknowledgements - http://msdn2.microsoft.com/en-us/library/aa559421.aspx
Note:-
- By default, Routing of Failed Messages is NOT enabled.
- Failed messages contains copy of original message so, you should act accordingly to avoid information disclosures 