How to redirect a domain hosted on 365.

[BoxOfFrogs]

Our domain, Mydomain.com, was moved to Office 365 to host our mail.  It is the small business version o 365.  At the time our website was www.mydomain.com.  Our company has changed branding and the website we use is now www.thebigdomain.com.  mydomain no longer has content.  We want people going to www.mydomain.com to be redirected to www.thebigdomain.com.  I changed the A record in 365 to point to the IP address of thebigdomain, but now when you go to mydomain you just get a "HTTP Error 404. The requested resource is not found." error.  So I'm at a loss as what to do next.  

Any help or questions to clarify are welcome.

Jim

[#2]

In your DNS you create a CNAME record for www.mydomain.com pointing to www.mybigdomain.com

For more information about CNAME just google or see following link:
https://www.pickaweb.co.uk/kb/cname-can-use-domain/

Adam

[#3]

There is an easy solution to this.

Get your website hosting provider to add www.mydomain.com as a host header to www.thebigdomain.com.

If there is no way to do that, you could always do a CNAME redirect (but that's a bit flakey) or spin up another website and forward it on, but that will cost.

Hope that answers your question.

Best, Chris