Internet Fax documents can be sent directly to their destinations without going through the SMTP server. (Internet Faxes normally transmit via the SMTP server.)
For example:
e-mail address:  | gts@ricoh.co.jp  | 
SMTP server address:  | gts.abcd.com  | 
In this case, this feature destination e-mail address (gts@ricoh.co.jp) is read as the SMTP server address "gts.abcd.com", and the transmissions bypass the SMTP server.