Cisco Cisco Email Security Appliance C160 Mode D'Emploi

Select Network > DNS.

Click Edit Settings. The Edit DNS page is displayed:

Select whether to use the Internet’s root DNS servers or your own internal DNS server or the Internet’s 
root DNS servers and specify alternate DNS servers. 

If you want to use your own DNS server(s) enter the server ID and click Add Row. Repeat this for each 
server. When entering your own DNS servers, specify a priority as well. For more information, see 

If you want to specify alternate DNS servers for certain domains, enter the domain and the alternate DNS 
server IP address. Click Add Row to add additional domains.

You can enter multiple domains for a single DNS server by using commas to separate domain 
names. You can also enter multiple DNS servers by using commas to separate IP addresses.

Choose an interface for DNS traffic.

Enter the number of seconds to wait before cancelling a reverse DNS lookup.

You can also clear the DNS cache by clicking Clear Cache.

Submit and commit your changes.