zoho customised login

zoho customised login

Hi,

i want to create a custom mail login page for my domain.

i've tryed to create a sub-domain for users on my domain to log into their emails from url - email.atandco-law.com
i've changed the hostname from email - email.secureserver.net[points to hosted on godaddy] and changed it to email[hostname] pointing to business.zoho.com 

the customised login page appears but when i enter user credentials as account admin it gives the following error 

page not found 
sorry, there is no web page matching your request. it is possible that you typed the address incorrectly or the file you are looking for has been moved or does not exist.

i tried to log in as a user [user a members credentials] i get the following error
Domain not available
you do not belong to this domain.please check your portal url


Also, Im hosting my mails with zoho and it is also configured on my blackberry device but it takes about 20 /30 mins before i receive the mails on my device. the forum mentioned about fetch settings but i cant locate the fetch options or button.

appreciate the support

thanks 

ladi