I'm running Netware 6.5, with GroupWise 8 and Bordermanager 3.8 (all latest service packs). Recently, I changed my Internet provider service and was issue new public IP addresses and new DNS server addresses.

Since then, some of my users have been getting an abnormal number of messages undeliverable - coming back as "550 Host Unknown".

To me this would indicate that the GWIA is trying to resolve these domain names but it can't. I'm thinking that I need to update the DNS server settings somewhere but I cannot find where.

I would appreciate a point in the right direction - or any other thoughts on the matter.

Thanks very much in advance.