The issue was that the DNS entry would change by itself to something other than what the nic was set for. Solution turned out to be a reboot which was only possible on off hours. Thanks to Susan Bradley who replied off list and pointed me to a discussion thread which covered this problem. Regards Bob -----Original Message----- From: Gallop, George [mailto:George.Gallop@xxxxxxxxxx] Sent: Tuesday, January 01, 2002 5:33 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: DNS problem http://www.ISAserver.org I am not sure what the issue is, but what machine is using 192.168.16.25 ? Is there something about that machine which is registering in DNS? -----Original Message----- From: Bob Cheeseman [mailto:bob@xxxxxxxxxxx] Sent: Tuesday, 1 January 2002 6:46 AM To: [ISAserver.org Discussion List] Subject: [isalist] DNS problem http://www.ISAserver.org Having a weird problem; SBS 2000 with ISA domain controller for companyname.com. External upstream DNS points to this machine. This server (companyname-sbs) has two nics'. 1 Has a public IP, 1 has a private IP, and they are plugged into separate switches accordingly. Two other servers are joined to the domain. One of the other server (companyname-web) has two nics'. 1 Has a public IP, 1 has a private IP, and they are plugged into separate switches accordingly. The internal IP is 192.168.16.3 In the DNS records on the small business server every 20 minutes (I'm guessing at that) the DNS entry for the "companyname-web" changes to 192.168.16.25. If I set the TTL to 7 days, it makes no difference. Where can this info be coming from? Regards Bob Cheeseman ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: george.gallop@xxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: bob@xxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')