HP Color LaserJet 4730 Multifunction Printer series - Manual (Page 160)

What is SMTP?
Simple mail transfer protocol (SMTP) is a set of rules that define the interaction between programs that
send and receive e-mail. In order for the MFP to send documents to e-mail, it must be connected to a
LAN that has a valid SMTP IP address. The SMTP server must also have Internet access.
If you are using a LAN connection, contact your system administrator to obtain the IP address for your
SMTP server. If you are connecting through a DSL connection, contact the service provider to obtain
the SMTP server IP address.
140 Chapter 6 Scanning and sending to e-mail ENWW