Lexmark MB2338
Open a web browser, and then type the printer IP address in the address field.
Notes:
Click Settings > Fax > Analog Fax Setup > Fax Receive Settings > Admin Controls.
Select Block No Name Fax.
Apply the changes.
Having problems sending or receiving fax messages using etherFAX? Here are basic troubleshooting steps.
Are your fax messages not going through? Make sure that your printer is connected to a working analog telephone service.