use for mailing purpose

.

• Connect nc -nvC <ip> <port> telnet <ip> <port>
• USER <user> PASS <pass> to login in pop3 service
• LIST to list no. of mails
• RETR <no. of the mail starting from 1> RETR 1 RETR 2 to open mail

note : id port 4555 or JAMES Remote Administration Tool 2.3.2 is open then user can be extracted using listusers and password can be changed using setpassword