Can’t Connect to Port 25

[kiekar]

Hello,

My setup consists of WAN LAN DMZ network.

DMZ gateway: 172.16.0.1

Web Server and Mail Server on same machine with NIC set as 172.16.0.2 and 172.16.0.3

VIPs

Address: xxx.xxx.xx.98/29
  Interface: DMZ
  Type: Alias
  Web Server

Address: xxx.xxx.xx.99/29
  Interface: DMZ
  Type: Alias

Address:  xxx.xxx.xx.100/29
  Interface: DMZ
  Type: Alias
  Mail Server

NAT 1:1

Interface: WAN
  External IP: xxx.xxx.xx.98 – Web Server
  Internal IP:  172.16.0.2

Interface: WAN
  External IP: xxx.xxx.xx.99
  Internal IP: 172.16.0.3

Interface: WAN
  External IP: xxx.xxx.xx.100 – Mail Server
  Internal IP: 172.16.0.4

NAT Rules

WAN TCP * * xxx.xxx.xx.100 25(SMTP) 172.16.0.4 SMTP(25)

Firewall Rules

TCP * * 172.16.0.4 25(SMTP) * None

DMZ Rule

TCP * * * 25(SMTP) * None

I am unable to connect to port 25 using Telnet from localhost to my mail server but I’m able to connect to mail.vif.com and mail.hmailserver.com.
Am I missing something? Any help would be much appreciated.

Karl

[chpalmer]

Is the localhost you refer to on the same subnet as the email machine?  I use Hmail here and works great!

edit- damn spellcheck!

[kiekar]

I'm using telnet from the same host (machine) where my mail server resides which is hmailserver. The IP ranges on hmailserver is set at, lower IP = 127.0.0.0 and upper IP = 127.0.0.0
I haven't changed any settings on hmailserver which is currently running fine using ISA 2006 firewall.

[chpalmer]

The firewall would have no affect on the local machine.  If you cant connect on a telnet client which resides on the same machine as Hmailserver then something is wrong on that machine.

On the Hmail administrator screen-

What are your settings for /settings/advanced/ipranges  both /my computer and /internet?

Then under /TCP IP Ports-  all types should have an IP of 0.0.0.0

Try mxtoolbox.com to test your incoming.

[kiekar]

Here are my hmailserver settings and my results using mxtoolbox to connect to my mail server.