Proxy server settings for SharePoint 2007

Well this was fun… All the examples of how to connect through a proxy from SharePoint are missing a crucial piece of information!

<system.net>
   <defaultProxy>
      <proxy usesystemdefault = "false" proxyaddress="http://proxyservername" bypassonlocal="true" />
   </defaultProxy>
</system.net>

This is the accepted route, with an exception to e added to the proxy to use anonymous authentication…

But is you use:

<defaultProxy useDefaultCredentials="true">
  <proxy usesystemdefault="false" proxyaddress=http://proxyservername" bypassonlocal="true" />
  <bypasslist>
    <add address="[a-z]+.domain.biz" />
    <add address="[a-z]+.domain2.biz" />
  </bypasslist>
</defaultProxy>

The required bit of which is the useDefaultCredentials parameter that passes the logged on users credentials on to the proxy server.

Now all I need to do is get the double-hop authentication to work…

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