Order Confirmations Error

Hi All,

Good day.

I got this message in our LIVE.

This error only happened in LIVE not in TEST.

What I have done:

1, In TEST, everything is fine, No problems at all.

2, Copied LIVE database over TEST, No problem in TEST.

3, Copy LIVE web service to a new location, and only modify connection string from LIVE to TEST in web.config. It will work in TEST.

Live:

<add key="CONNECTION_STRING" value="Data Source=Saturn\Tessitura_LiveDB;Initial Catalog=impresario

TEST:

<add key="CONNECTION_STRING" value="Data Source=Saturn\Tessitura_TESTDB;Initial Catalog=impresario

LIVE and TEST in same SQL machine and same IIS machine Windows 2003 x64.

4, google with this error message, only saw similar questions without answer. 

Thank you for your time.

Ben

Error Message:

Error creating the Web Proxy specified in the 'system.net/defaultProxy' configuration section.