[Serusers] changing domain

hello, we had configured the mysql database and html site on hard disk.everything was working fine with domain alise sip.abcd.com for abcd.com . ip address was . later we wated to change it from sip.abcd.com to simply abcd.com . so we just removed child name sip from the domain now everything is working fine on web end but when we try to connect or log via x10 like software it prompts a error login failure contact network admin message while login in via X10. we have completely changed mysql data acordng to domain name also we made domain anme change in ser.cfg & cofin.php file but the problem is remain same if theres any ohter settings do let me know. thanks vinod bisen NOTE: Once the Domain name has been chosen it is not easy to change, since all users are recorded with the domain name, so if you change it you will have to update the config of each user's phone