DNS records are only athoritive and useable if they are setup on the registered nameserver for that domain. You've probably done all that and so that works. For reverse lookups, there is a similar catch. reverse dns records are only authoritive and useable if they are setup on the nameserver that is registered for that particular IP-address. I'm guessing your ISP is the registered owner of your public IP-address(es). So your ISP is the one to make a reverse dns record mapping his IP address to your domain name. Setting up reverse records on a machine that officially is not the registered nameserver for that ip address will make hosts that have that particular machine set as their nameserver believe it is authoritive. The rest of the world just disagrees. Serge Maandag. -----Original Message----- From: greego barooke [mailto:nocause@cebu.onevirtual.com] Sent: maandag 4 december 2000 6:46 To: Linux Admin; Linux Admin Subject: reverse lookup ive setup a dns server,,, all was fine except for a reverse lookup when i try to lookup with an ip in another dns server, it will not display the corresponding hostname of the ip. but in my server where i setup the dns the reverse ip works,.. thanks - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org