about website forwarding and email forwarding

[bind at guangbin.interland.net]

Hi,

Some companies are providing website forwarding and email forwarding service.

With E-mail Forwarding, you have the ability to have all mail addressed to
your-domain-name.com forwarded to your current e-mail address.

With Website Forwarding, you have the ability to direct 
http://www.your-domain-name.com) to your "real" website, for example,
http://www.anotherdomain.com/dir1/file1.html.

I don't know how it works in the dns view, Could somebody explains how
it works? Can we implement both website forwarding and email forwarding
using BIND?

Thank you in advance.

Liu