www.domain.com not working, domain.com works

Hi

I've been having issues with one of our domains, if you type www.domain.com it redirects to the cpanel default apache screen, however the domain.com goes to the correct destination, this account have a dedicated IP address, I've also change it to a different IP and the same still happens.

The DNS are good, both point to the same IP ( www & @ A records)

The httpd.conf is good, the virtual host directive have the doman.com as main domain and as a server alias the www.domain.com

Here is the weird part, before this was happening both domain.com and www.domain.com appear as a parked domain to a different account on the server, from whm I was unable to remove it, however I review and clean the files

/etc/localdomains
/var/cpanel/users/domain_username
/usr/local/apache/conf/httpd.conf
/etc/userdomains
/etc/trueuserdomains

also after that I run /scripts/updateuserdomains

Any clue ??

Thanks

Bucanero