!=
-ERR Password
ATTACK
BAD
CWD etc
DEBUG
EXPN
FAILURE
ILLEGAL
LOGIN FAILURE
LOGIN REFUSED
PERMITTED
REFUSED
RETR group
RETR passwd
RETR pwd.db
ROOT LOGIN
SITE EXEC
VRFY
"WIZ"
admin 
alias database
debug
denied
deny
deny host
expn
failed
illegal
kernel: Oversized packet received from
nested
permitted
reject
rexec
rshd
securityalert
setsender
shutdown
smrsh
su root
su: 
sucked
unapproved
vrfy
attackalert
