New Message: Site redirection

[webmaster at userland.com]

A new message was posted:

Address: http://manila.userland.com/discuss/msgReader$2916

By: Manila Newbie (ManilaNewbie at hotmail.co.uk)

I've just noticed something for all my sites.

If I just type in www.websitename.com the site is correct.

But if I type websitename.com or http://websitename.com (i.e. without the www) then the homemanilawebsite appears as opposed to the intended one.

What have I done wrong when setting the Domains and paths?

Is it possible to change it?

This is a Manila site... http://manila.userland.com/.