Question : DNS problem in AIX

When DNS is set on RS6000(AIX) a file /etc/resolv.conf is created like other unix system.
Then it takes long time for other client to connect(telnet,nfs) to this server
but seserver to client is not.
What is problem?

Answer : DNS problem in AIX

The problem is that the "client" takes a long time
to get an answer (namely the IP-address of the "server")
from the DNS-servers.  Going the other way, the "server"
can immediately get the answer from DNS-servers.

Check the 'resolv.conf' file on the *CLIENT*.
It is pointing at an IP-address of a "dead" DNS-server,
and also to an IP-address of a "working" DNS-server.

The client first asks the "dead" DNS-server.
After NN (20? 30? 60?) seconds of not getting an answer,
the client then asks the "working" DNS-server,
receives an immediate answer, and then connects.

If you can TELNET or FTP *immediately*,
when specifying the IP-address (rather than the name)
of the server, then this confirms that you
have a "dead" (or "unreachable") DNS-server.