please…can anyone help me, how to set mikrotik policy routing with eksternal squid? when first am set mikrotik with policy routing without squid its normally work (IP 192.168.1.1 - 192.168.1.10= modem1, 192.168.1.11-192.168.1.20=modem2), but when i compile it with eksternal squid its not work anymore, only on modem 1 can browsing, modem 2 only can play a game or use yahoo messenger (port 80 not work on modem 2).
can anyone help me 
forgive me, my english is not good.
i did not understand your scenario and you provide a digram of your scenario? also post your router config here [routing table, ip address, nat, ect..]
ADSL1-----------|
-----------------|—MIKROTIK-----------SWITCH--------CLIENT
| |–SQUID BOX
ADSL2-----------|
ADSL1= 192.168.10.1
ADSL2= 192.168.100.1
SQUID BOX= 192.168.200.100
MIKROTIK:
LAN: 192.168.0.1/24
ADSL1= 192.168.10.2/24
ADSL2= 192.168.100.2/24
SQUID= 192.168.200.1/24
/ip fi ma pr
0 ;;; ADSL1
chain=prerouting action=mark-routing new-routing-mark=ADSL1
passthrough=no src-address-list=ADSL1
1 ;;; ADSL2
chain=prerouting action=mark-routing new-routing-mark=ADSL2
passthrough=no src-address-list=ADSL2
/ip fi nat pr
0 chain=srcnat action=masquerade out-interface=ADSL1
1 chain=srcnat action=masquerade out-interface=ADSL2
2 ;;; Proxy HIT
chain=dstnat action=dst-nat to-addresses=192.168.200.100 to-ports=3128
protocol=tcp src-address=!192.168.200.100 in-interface=LAN
dst-port=80,8080,3128,8081
/ip route pr
0 A S ;;; ROUTE ADSL1
0.0.0.0/0 192.168.10.1 1
1 A S ;;; ROUTE ADSL2
0.0.0.0/0 192.168.100.1 1
There is no problem with the squid box when i use it for just 1 line, but if i use it for this routing policy my squid box not work.
can u tell me what rule i must create to use my squid box again bro?? thank u very much… 