The following is the ifconfig -a result on my mail server and the traceroute
result from mail server to the two clients.
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
hme0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 172.28.9.237 netmask ffffff00 broadcast 172.28.9.255
** Not working Subnet **
traceroute to 172.28.50.193 (172.28.50.193), 30 hops max, 40 byte packets
1 172.28.9.230 (172.28.9.230) 0.870 ms * 0.794 ms
2 22.214.171.124 (126.96.36.199) 1.539 ms 1.360 ms 1.301 ms
3 172.28.50.193 (172.28.50.193) 1.073 ms 1.162 ms 0.985 ms
** Working Subnet **
traceroute to 188.8.131.52 (184.108.40.206), 30 hops max, 40 byte packets
1 172.28.9.230 (172.28.9.230) 0.871 ms * 0.755 ms
2 220.127.116.11 (18.104.22.168) 1.577 ms 1.315 ms 1.316 ms
3 22.214.171.124 (126.96.36.199) 1.045 ms 1.088 ms 1.285 ms
As can be seen able, my mail server is in 172.28.9.237. The gateway is
The funny thing here is that I am not able to access the SMTP service from
any legal Intranet address (10.0.0.0, 172.16-32.0.0, 192.168.0.0) This
happens even if my client is on the same subnet as the mail server
(172.28.9.0) It seems to me that there is a time-out issue when I am
accessing port 25 from these addresses. All other address gives me a almost
immediate kind of establish connection.
> # Hi,
> # I have this problem and hope someone would be able to advise what I
> # I am currently migrating my network from a illegal intranet address
> # legal intranet address at 172.28.x.x
> # The problem I am facing is that I am able to ping the mail server on
> # network but not able to access port 25. A client on the illegal
> # subnet is able to access this server but not a client on the legal
> # Both client can ping the server and the SMTP service is OK.
> # My OS is Solaris 8 for the Mail Server. Is there any issue on the OS?
> # patch?
> Could you gather more info, 'ifconfig -a', traceroute, etc
> and post it?