Cisco Cisco Email Security Appliance C680 Technical References

You can configure the appliance to use the Internet root servers for all DNS queries except specific local 
domains.

[20]> 

Enter the minimum TTL in seconds for DNS cache.

[1800]> 

Currently using the Internet root DNS servers.

Alternate authoritative DNS servers:

1. com: dns.example.com (10.1.10.9)

Choose the operation you want to perform:

- NEW - Add a new server.

- EDIT - Edit a server.

- DELETE - Remove a server.

- SETUP - Configure general settings.

[]> 

mail3.example.com> dnsconfig

Currently using the Internet root DNS servers.

No alternate authoritative servers configured.

Choose the operation you want to perform:

- NEW - Add a new server.