How to Configure Farm-Level Proxy Server Settings for Enterprise Search in SharePoint Server 2010 (en-US)

If you are finding that no federated search results are displayed in searches, or you see a Location not found error message, a server proxy setting is most likely stopping search from reaching a remote location for crawling or federation. You can specify proxy server settings for crawling content and querying federated sources on computers in other networks, such as the Internet. In many cases it is necessary to use a proxy server to bypass intranet security restrictions.

Verify that the user account that is performing this procedure is an administrator for the search service application.
In Central Administration, in the Quick Launch, click General Application Settings.
On the General Application Settings page, in the Search section, click Farm Search Administration.
On the Farm Search Administration page, in the Farm-Level Search Settings section, click the value of the Proxy server setting.
In the Search Proxy Setting dialog box, select Do not connect by using a proxy server if you do not want the crawler to use a proxy server. Select Use the proxy server specified if you want the crawler to use a proxy server when crawling content. If you select this option, configure the following options:
- In the Address box, type the URL of the proxy server.
- In the Port box, if the proxy server is not using the default port, type the port number that the proxy server is using.
- If you do not want the crawler to use the proxy server when crawling within the intranet, select the Bypass proxy server for local (intranet) addresses check box.
- In the Do not use proxy server for addresses beginning with box, type the URLs that the crawler can access without going through the proxy server. Separate the addresses with semi-colons.
- Select the Use these proxy settings for access to federated sites check box if you want the search system to go through the proxy server when querying external content repositories.
Click OK.