when I write host -l mydomain.com I can see all my A records and theari IPs. this very serious security problem. How can I prevent this? thanx :-) YILMAZ GULERYUZ Network Engineer Tel. +90312-289 90 00 Ext. 5563 Fax. +90312-284 06 20 Address: BASARI TELEKOM Cetin Emec Bulvari No:46 Balgat ANKARA / TURKEY