Lexmark CS421
Open a web browser, and then type the printer IP address in the address field.
Notes:
Click Settings > Device > Notifications.
From the Supplies menu, click Custom Supply Notifications.
Select a notification for each supply item.
Apply the changes.
Configure the SMTP server to let your printer send e‑mail notifications.
Maintain the security of your confidential documents. Indicate when to delete them from the printer memory.