Ricoh D131 Service Manual page 1126

Authentication
Method:
Remark:
D619
SMTP-AUTH
POP before SMTP
A-POP
The machine must be set up as an e-mail client before installation.
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).
234 SM