A company has a backup T1 link to its corporate head office. To minimize costs, the company will
use the T1 link only for email downloads from the corporate email server. The PPP dialer initiates
only when the internal server initiates an email connection to the corporate email server. However,
the PPP connection does not disconnect after emails are downloaded. What is the cause of this
issue?

A.
The dialer-map command is not configured.

B.
The interface is not added in the dialer-group command.

C.
The dialer-list command is incorrectly configured.

D.
The dialer time-out command is not configured.