"no more recursive clients: quota reached"
By default, BIND 9 allows 1000 concurrent recursive clients. If you exceed this limit, you will see syslog messages similar to:
Feb 14 23:45:42 hostname named: [ID 866145 daemon.warning] client client_IP#49702: no more recursive clients: quota reached
To increase the number of concurrent recursive clients, use the recursive-clients option in the global server configuration options.
From the BIND 9 Administrator Reference Manual:
The maximum number of simultaneous recursive lookups the server will perform on behalf of
clients. The default is 1000. Because each recursing client uses a fair bit of memory, on the order of
20 kilobytes, the value of the recursive-clients option may have to be decreased on hosts with
Last modified: 02/16/2006