Dahua Smart Box Series User Manual page 289

Except default domain name registration, you can also use customized domain name
(You can input your self-defined domain name.) After successful registration, you can
use domain name to login installed of the device IP.
User name: It is optional. You can input your commonly used email address.
Important
Do not register frequently. The interval between two registrations shall be more than
60 seconds. Too many registration requests may result in server attack.
System may take back the domain name that is idle for one year. You can get a
notification email before the cancel operation if your email address setup is OK.
5.8.2.8 IP filter
The IP filter interface is shown as in Figure 5-32.
After you enabled trusted sites function, only the IP listed below can access current DVR.
If you enable blocked sites function, the following listed IP addresses can not access
current DVR.
5.8.2.9 Email
The email interface is shown as in Figure 5-33.
Standalone DVR User's Manual
Figure 5-32
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