There are two ways to resolve this:
1) Cpanel / Plesk
Create a redirect of every request with http://www
to http://push...
.
For example .. on BlueHost you do this on this page (it's pretty much the same operation on all Cpanels).
What you must select in this case is your domain, and do not leave selected All Domains, otherwise all requests on this server will be redirected to the URL which you reported below.
Otherwise, below there are some radio buttons, which you select if you want to redirect only when the URL has www , in both cases or not redirect www.
2) .htaccess
In your% of root% (the first), do the following:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]
RewriteRule ^$ app/webroot/ [L]
RewriteRule (.*) app/webroot/$1 [L]
</IfModule>
Choose one of the above ways and test.
Any questions, leave a comment below.