Apache 2 virtual host configuration for subdomain redirection

Question

I'm trying to set up a mail subdomain on my site that will simply redirect to my Google Apps mail account. I thought I could use the Apache 2 vhost configuration below, but it's not working:

<VirtualHost *:80>
  ServerName mail.foo.com
  Redirect 301 / https://mail.google.com/a/foo.com/
</VirtualHost>

What else do I need to get this to work?

Answer 1

Do you have a corresponding A record for mail.foo.com. (or *.foo.com.) set?

Example:

*.foo.com. 14400 IN A 1.2.3.4

... or:

mail.foo.com. 14400 IN A 1.2.3.4

(Where 1.2.3.4 is the IP address of the server running Apache 2)