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Cisco Cisco Email Security Appliance C160 Mode D'Emploi

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33-20
Cisco AsyncOS 8.5.5 for Email Security User Guide
 
Chapter 33      Managing and Monitoring Using the CLI
  Monitoring Using the CLI
Checking the DNS Status
The 
dnsstatus
 command returns a counter displaying statistics of DNS lookup and cache information. 
For each counter, you can view the total number of events since the counter was last reset, since the last 
system reboot, and over the lifetime of the system. 
 lists the available counters.
8  mail.remotedomain08.com    172.16.0.9        Incoming01             3
9  mail.remotedomain09.com    172.16.0.10       Incoming01             3
10 mail.remotedomain10.com    172.16.0.11       Incoming01             2
11 mail.remotedomain11.com    172.16.0.12       Incoming01             2
12 mail.remotedomain12.com    172.16.0.13       Incoming02             2
13 mail.remotedomain13.com    172.16.0.14       Incoming01             2
14 mail.remotedomain14.com    172.16.0.15       Incoming01             2
15 mail.remotedomain15.com    172.16.0.16       Incoming01             2
16 mail.remotedomain16.com    172.16.0.17       Incoming01             2
17 mail.remotedomain17.com    172.16.0.18       Incoming01             1
18 mail.remotedomain18.com    172.16.0.19       Incoming02             1
19 mail.remotedomain19.com    172.16.0.20       Incoming01             1
20 mail.remotedomain20.com    172.16.0.21       Incoming01             1
Table 33-10
Data in the dnsstatus Command 
Statistic
Description
DNS Requests
A top-level, non-recursive request to the system DNS cache to resolve a 
domain name.
Network Requests
A request to the network (non-local) to retrieve DNS information.
Cache Hits
A request to the DNS cache where the record was found and returned.
Cache Misses
A request to the DNS cache where the record was not found.