Ricoh Aficio MP C3001 Service Manual page 1987

SMTP-AUTH
Authentication
POP before SMTP
Method:
A-POP
The machine must be set up as an e-mail client before installation.
Remark:
Any client PCs connected to the machine through a LAN must also
be e-mail clients, or some features will not work (e.g. Autorouting).
SM 183
IFAX Specifications
D545