postfix mail server

root.DeleteThis@192.168.10.102:~# groupadd postdrop
groupadd: group postdrop exists
root.DeleteThis@192.168.10.102:~# postfix start
postfix: warning: valid_hostname: numeric hostname: 192.168.10.102
postfix: fatal: unable to use my own hostname
root.DeleteThis@192.168.10.102:~# hostname localhost.localdomain
root.DeleteThis@192.168.10.102:~# postfix start
postfix/postfix-script: warning: group or other writable: /etc/
postfix/./makedef
s.out
postfix/postfix-script: warning: group or other writable: /etc/
postfix/./bounce.
cf.default
postfix/postfix-script: warning: group or other writable: /etc/
postfix/./main.cf
..default
postfix/postfix-script: warning: not set-gid or not owner+group+world
executable
: /usr/sbin/postqueue
postfix/postfix-script: warning: not set-gid or not owner+group+world
executable
: /usr/sbin/postdrop
postfix/postfix-script: starting the Postfix mail system
root.DeleteThis@192.168.10.102:~# netstat -tap
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address
State
PID/Program name
tcp 0 0 *:1024 *:*
LISTEN 1
011/rpc.statd
tcp 0 0 *:sunrpc *:*
LISTEN 9
89/portmap
tcp 0 0 *:34577 *:*
LISTEN 1
027/mvltd
tcp 0 0 *:telnet *:*
LISTEN 1
023/inetd
tcp 0 0 *:smtp *:*
LISTEN 1
091/master
root.DeleteThis@192.168.10.102:~#