Buenos días tengo una máquina centos con realizando funciones de proxy/muro de acceso a internet con las siguiente configuración de iptables y squid.
Una vez relaizado en el script de iptables, salvado  y ejecutado con start funciona perfectamente. Pero el problema que no entiendo es que cuando reinicio la máquina y ejecuto service squid start y service iptables start outlook express no me pasa es como si el puerto 110 se cerrase. Que hago mal?. Muchas gracias
 

iptables –F

iptables –X

iptables –Z

iptables –t nat –F

iptables –P INPUT ACCPET

iptables –P OUTPUT ACCEPT

iptables –P FORWARD ACCEPT

iptables –t nat –P PREROUTING ACCEPT

iptables –t nat –P POSTROUTING ACCEPT

/sbin/iptables –A INPUT –i lo –j ACCEPT

iptables –A INPUT –s 192.168.0.0/24 –i eth1 –j  ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p tcp –dport  80 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p tcp –dport  443 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p tcp –dport  993 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p tcp –dport  995 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p tcp –dport  110 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p tcp –dport  465 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p tcp –dport  25 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p tcp –dport  53 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p udp –dport  53 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –p tcp –dport  1863 –j ACCEPT

iptables  -A FORWARD –s 192.168.0.0/24 –i eth1 –j DROP

iptables –t nat –A PREROUTING –s 192.168.0.0/24 –i eth1 –p tcp –dport 80 –j REDIRECT –to-port 3128

iptables –t nat –A POSTROUTING –s 192.168.0.0/24 –o eth0 –j MASQUERADE

echo 1 > /proc/sys/net/ipv4/ip_forward

service iptables save

service iptables start
_________
 
visible_hostname squid
http_port 3128 transparent
http_port 8080 transparent
cache_mem 100 MB
cache_swap_low 80
cache_swap_high 100
maximum_object_size 20000 KB
cache_dir ufs /var/spool/squid 25000 16 256
cache_store_log none
half_closed_clients off
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
#acl todalared src 192.168.0.0/255.255.255.0
acl permitidos src "/etc/squid/permitidos"
acl reglas url_regex "/etc/squid/reglas"
acl horario time SMTWHFA 00:00-08:00
acl to_localhost dst 127.0.0.0/8
acl SSL_ports port 443 563
acl Safe_ports port 80
acl Safe_ports port 21
acl Safe_ports port 443 563
acl Safe_ports port 70
acl Safe_ports port 210
#acl Safe_ports port 1025-65535
acl Safe_ports port 280
acl Safe_ports port 488
acl Safe_ports port 591
acl Safe_ports port 777
acl CONNECT method CONNECT
#logformat squid %ts.%03tu %6tr %>a %Ss/%03Hs %<st %rm %ru %un %Sh/%<A %mt
#logformat squidmime %ts.%03tu %6tr %>a %Ss/%03Hs %<st %rm %ru %un %Sh/%<A %mt [%>h] [%<h]
logformat common %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %<st %Ss:%Sh
#logformat combined %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh
access_log /var/log/squid/access.log squid
ie_refresh on
http_access allow manager localhost
http_access deny manager
#http_access allow todalared
http_access allow permitidos !reglas !horario
#http_access allow !reglas
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access deny all