301 redirect, www redirect, domain redirect

First create a web.config file in your root directory if it's not already there. Second, put the following code into your web.config file.

Case1: 301 redirect domain.com to www.domain.com

<?xml version="1.0" encoding="UTF-8"?>

<configuration>

<system.webServer>

<rewrite>

<rules>

<rule name="Canonical Host Name" stopProcessing="true">

<match url="(.*)" />

<conditions>

<add input="{HTTP_HOST}" pattern="^domain\.com$" />

</conditions>

<action type="Redirect" url="http://www.domain.com/{R:0}" redirectType="Permanent" />

</rule>

</rules>

</rewrite>

</system.webServer>

</configuration>

Case2: 301 redirect all domains to one domain name