There may be scenarios where a www prefix needs to be added to the original request, for example, if the original request is mydomain.com, this will be rewritten to www.mydomain.com

Solution

Using the Naked_Domain_Rewrite rule below, requests automatically have www appended to the original request.

Example - Static Version

Rule Name: Naked_Domain_Rewrite

Rule Type: Replace Header

Match Type: Regular Expression

Header Field: host

Match string: /^mydomain\.com$/

Modified URL: www.mydomain.com

Example - Dynamic Version

Rule Name: Naked_Domain_Rewrite

Rule Type: Replace Header

Match Type: Regular Expression

Header Field: host

Match string: /^(.*)$/

Modified URL: www.\1