Configurations
--
network/interfacesauto lo
iface lo inet loopback

# eth0 interface in DMZ on 93.153.125.228/32  net 93.153.125.224/28
auto eth0
iface eth0 inet static
        address 93.153.125.228
        netmask 255.255.255.240
        network 93.153.125.224
        broadcast 93.153.125.239
        gateway 93.153.125.225

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface    MSS   Window irtt
93.153.125.224  0.0.0.0         255.255.255.240 U     0      0        0 eth0     0     0      0
0.0.0.0         93.153.125.225  0.0.0.0         UG    0      0        0 eth0     0     0      0

/etc/resolv.conf

domain dicholding.local
search dicholding.local
nameserver 192.168.50.10
nameserver 192.168.50.11

/etc/hosts

127.0.0.1       localhost
127.0.0.1       mail.dicholding.com
93.153.125.228  mail.dicholding.com
# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

iptables -L

oot@gina:/home/mates# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination