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I’m trying to map help.domain1.com to help.domain2.com. I’ve seen this on UserVoice. They let you map something.yourdomain.com to something.uservoice.com.
On domain1.com I’ve set up a CNAME to help.domain2.com.
It works fine but when I open help.domain1.com I get the content of domain2.com instead of help.domain2.com.
After some experimenting I’ve realized that this is an expected behavior.
So my question is what do I have to do on domain2.com (or maybe on domain1.com?) to have it show content of subdomain “help.domain2.com” when I navigate help.domain1.com?
(I’m using Plesk and the OS is Windows Server 2003)
4
Answers
I found the solution. One way would be to use a mod_rewrite rule on domain2.com and do a redirect if referrer is domain1.com. Or to assign a dedicated IP address.
HTTP/1.1 uses the
Host:header to figure out which site is being requested, should there be more than one site hosted on the same IP address.You need to ensure that the second (target) web-server is configured to expect incoming HTTP requests with the original URI in them.
I am not 100% sure how to do this in windows but in apache you just need to setup a virtual host to redirect it from the main domain to your subdomain.
you do not say if you are using IIS or apache or what the webserver is.
I imagine that what you need to do is setup a new website in IIS (not a virtual directory) and in the website tab click on advanced and edit the entry in there so that the “host header name” is the subdomain you want.
Jon Hawkins
I was facing the same problem for the last couple of days, and just found the solution…
In /etc/apache2/site-available/default, I had two virtual hosts, first one was for my domain, and the second one was for my sub domain. All I had to do was reverse the order of the virtual host blocks, placing the sub domain in front of the domain, and it worked! 😀