Network Working Group Ftp and Network Mail System

FTP currently provides two commands for handling mail. The MAIL command allows a user to send mail via the TELNET connection (the server collects the mail and determines its end by searching for the character sequence "CRLF.CRLF"). The MLFL (mail file) command allows a user to send mail via the data connection (requires a user-FTP to handle the command but transfer is more efficient as server need not search for a special character sequence). These commands are being used to provide network mailing facilities. Local mail and SNDMSG programs have been modified at many sites to include network mailing (e.g., USER@HOST at BBN_TENEX and MAIL host user at MIT-DMCG).