forward .example.com proxy-a
forward .askubuntu.com proxy-b
forward :443 .

redsocks {
local_ip = 127.0.0.1; ip = 127.0.0.1; type = socks5;
local_port = 11081;
port = 1081;
}
redsocks {
local_ip = 127.0.0.1; ip = 127.0.0.1; type = socks5;
local_port = 11082;
port = 1082;
}

iptables -t nat -A REDSOCKS -d 192.168.220.0/23 -p tcp -j REDIRECT --to-ports 11082

iptables -t nat -A REDSOCKS -d 192.168.234.0/23 -p tcp -j REDIRECT --to-ports 11081

iptables -t nat -A OUTPUT -p tcp -m owner --uid-owner luser -j REDSOCKS