Redirect non-www to www except subdomain

Question

I have a wildcard domain. What I want are:

• When user go to mydomain.com, it should be redirect to www.mydomain.com
• When user go to subdomain.mydomain.com, keep the connect
• When user go to www.subdomain.mydomain.com , it should be redirect to subdomain.mydomain.com

What I can do on domain configs (change the record types) or my web server (I'm using nginx)? I searching the questions but not solve my case. Thanks.

Answer 1

you can use dns configuration to achieve this.

something like this https://help.instapage.com/hc/en-us/articles/206028427-How-do-I-create-a-301-redirect-for-a-root-naked-domain-in-my-GoDaddy-account-