how do i redirect unknown subdomains?

[Will Hargrave]

On 20 Mar 2001, bryan kruel wrote:

> please forgive me if this has been asked before.  i searched for this
> before i sent this email, but i have yet to find an answer. say i have
> domain foo.com.  foo.com exists, and is a returning http content.
>
> now, suppose a user enters bar.foo.com.  since there is no ip
> associated with that name, i want the user redirected to foo.com.
> can that be done?  and if so, how?

You need a wildcard A record, so thus:

*.foo.com. IN A 192.0.2.1

This shouldn't affect other hosts you may have, say, wibble.foo.com should
resolve properly despite the wildcard.

-- 
Will Hargrave            <will at harg.net>