Host a subdomain on DreamHost when DNS is controlled elsewhere
From DreamHost
This (brief) How To is useful if:
- You host DNS for a domain somewhere other than DreamHost
- You wish to host a *subdomain* (www.subdomain.domain.com or subdomain.domain.com) on DreamHost
- You do not host www.domain.com on DreamHost
The basic strategy for hosting a web application on DreamHost when DNS is managed elsewhere is to
- Add webhosting for domain.com via the Domains/Manage Domains page on the panel
- Open up the "DNS" page for your newly added domain
- Get the A record for domain.com, www.domain.com, etc., and add them to whatever DNS server you are using
The trick with subdomains is that you *must* add domain.com before you add subdomain.domain.com. (Otherwise the panel will tell you that you don't have permission to add the domain.) The revised steps to host subdomain.domain.com are:
- Add webhosting for domain.com via the Domains/Manage Domains page on the panel
- Delete the web hosting for domain.com via the Domains/Manage Domains page on the panel. Only delete the hosting, don't delete the domain.
- Add webhosting for subdomain.domain.com via the Domains/Manage Domains page on the panel
- Open up the "DNS" page for your newly added domain
- Get the A record for subdomain.domain.com, www.subdomain.domain.com, etc. -- skipping the A records for domain.com -- and add them to whatever DNS server you are using.
DreamHost support mentioned that email addresses should not be added in this situation.

