DirectoryIndex cpanel_account_suspended.html
RewriteEngine On
RewriteCond %{REQUEST_URI} !^/cpanel_account_suspended\.html$
RewriteRule . /cpanel_account_suspended.html [L]

## This line is added as a comment on purpose so cPanel thinks that it has suspended the account. Checks fail during unsuspend otherwise.
# RedirectMatch .* /cgi-sys/suspendedpage.cgi