Hello Posted this in the networking forum before, but was told that it was off-topic there... I have some strange issue when trying to resolve a certain DNS hostname on an apple whithin a windows network. The hostname is "scanner" and points to a network scanner. The scanner is not in the domain but only attached to the network. I defined the hostname->IP mapping manually in the PDC's DNS (The PDC also serves as DNS server in our network). The apple is not in the domain, neither, but attached to the network. It gets its IP settings as well as DNS servers from the DHCP server, which is on our PDC, too. Usually, names can be resolved successfully on the apple, but when I try to resolve "scanner", the DNS server says "SERVFAIL". On windows clients that are part of the domain, I can successfully resolve the name. In this case, the very same DNS server does not respond with "SERVFAIL". According to OpenDNS, SERVFAIL means an internal error, so why does the internal error depend on whether the client is a Mac or a Windows client? And how to solve this issue? Thx, chiccodoro