Plesk allows you to configure its DNS server to provide the recursive
service for queries. With recursive service allowed, your DNS server,
when queried, performs all the lookup procedures required to find the
destination IP address for the requester. When recursive service is not
allowed, your DNS server performs minimal number of queries only to find
a server that knows where the requested resource resides and to redirect
the requester to that server. Therefore, recursive service consumes more
server resources and makes your server susceptible to denial-of-service
attacks, especially when the server is set to serve recursive queries
from clients outside your network.
After your install Plesk, the built-in DNS server serves recursive
queries only from your own server and from other servers located in your
network. This is the optimal setting. If you upgraded from earlier
versions of Plesk, your DNS server may be configured to serve recursive
queries from any host.
If you want to change the settings for recursive domain name service:
- Go to Tools & Settings > DNS Template > DNS Recursion
Settings. - Select the option you need:
- To allow recursive queries from all hosts, select Any host.
- To allow recursive queries from your own server and hosts from
your network, select Localnets. - To allow recursive queries only from your own server, select
Localhost.
- Click OK.