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I want a way of allowing users to access a whit-label version of my WebApp using a CNAME record allowing them to login to their app from a subdomain or domain they setup.

e.g. app.mywebapp.com would be where I host the app.

User will access app via userapp.userdomain.com or userdomain.com by using a cname record pointing to app.mywebapp.com.

How do I achieve this?

Jay Joeson
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1 Answers1

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You either need to serve your web application as the default catch-all virtual host or your server needs to be aware of each and every hostname it should serve. The CNAME is a DNS concept, and the web server only sees the HTTP Host: header (or SNI in case of HTTPS), which is always the original hostname in the address bar.

Esa Jokinen
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