APC AP7900 ユーザーズマニュアル

The Rack PDU cannot send any e-mail messages unless the IP address of 
the primary DNS server is defined.

The Rack PDU will wait a maximum of 15 seconds for a response from the 
primary or (if specified) the secondary DNS server. If the Rack PDU does 
not receive a response within that time, e-mail cannot be sent. Therefore, 
use DNS servers that are on the same segment as the Rack PDU or on a 
nearby segment (but not across a WAN).

Once you define the IP addresses of the DNS servers, verify that DNS is 
working correctly. Enter the DNS name of a computer on your network to 
test whether you can look up the IP address for that DNS name.

The 

 option in the 

 menu accesses the following settings:

See 

SMTP Server

Defines the SMTP server by its DNS name.

This definition is required only when the 

 option 

(see 

) is set to 

.

From Address

Defines the contents of the 

 field in the e-mail messages sent 

by the Rack PDU.

The SMTP server’s configuration may require that you use a 

valid user account on the server for this setting. See the server’s 
documentation for more information.