Cisco Cisco Email Security Appliance C160 ユーザーガイド
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Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
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Chapter 15 System Administration
Figure 15-12
The DNS Page
To edit DNS Settings via the GUI:
Step 1
Click Edit Settings. The Edit DNS page is displayed:
Figure 15-13
The Edit DNS Page
Step 2
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.
server or the Internet’s root DNS servers and specify alternate DNS servers.