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A Smarter 301 permanent redirect solution using ASP!

Ever notice that your site is being indexed in search as http://site.com and http://www.site.com? This is because your site most likely responds to both variations and is known as a canonical problem. The non-WWW address shows the same content as the WWW address so below we are going to cover 3 problems. First, how do I fix the canonical problem correctly, second, how do you perform a redirect that search engines will understand and not penalize for, third, how do I move my website to a new domain name properly? 

That's right, response.redirect is not a good idea because it produces a response of code 302 meaning temporary redirect and search engines don't like 302 anymore!

1. Redirecting correctly via ASP

2. Non WWW redirecting to the WWW version with ASP, this will seamlessly send the user to the correct page even carrying over the query string and URL.

<% urlSTR = trim(Request.ServerVariables("URL")) querySTR = replace(trim(Request.ServerVariables("QUERY_STRING")), "?", "") domainnameSTR = replace(trim(Request.ServerVariables("SERVER_NAME")), "/", "") if instr(domainnameSTR, "www") = 0 then redirecturlSTR = "http://www."&domainnameSTR if urlSTR <> "" then redirecturlSTR = redirecturlSTR & urlSTR end if if querySTR <> "" then redirecturlSTR = redirecturlSTR & "?" & querySTR end if redirecturlSTR = replace(redirecturlSTR, "Default.asp", "") 'this is optional, removes the default redirect when no url is present Response.Status="301 Moved Permanently" Response.AddHeader "Location", redirecturlSTR Response.End end if %>

3. Moving to a completely new domain name or website address (permanent 301 redirect).

<% urlSTR = trim(Request.ServerVariables("URL")) querySTR = replace(trim(Request.ServerVariables("QUERY_STRING")), "?", "") domainnameSTR = replace(trim(Request.ServerVariables("SERVER_NAME")), "/", "") olddomainnameSTR = "oldsite.com" 'change this to what your old site used to be newdomainnameSTR = "newsite.com" 'change this to where the user should end up if instr(domainnameSTR, olddomainnameSTR) <> 0 then redirecturlSTR = "http://www."&newdomainnameSTR if urlSTR <> "" then redirecturlSTR = redirecturlSTR & urlSTR end if if querySTR <> "" then redirecturlSTR = redirecturlSTR & "?" & querySTR end if redirecturlSTR = replace(redirecturlSTR, "Default.asp", "") 'this is optional, removes the default redirect when no url is present Response.Status="301 Moved Permanently" Response.AddHeader "Location", redirecturlSTR Response.End end if %>