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 From:  "Simon Buob" <simon dot buob at lan dot ch>
 To:  <m0n0wall at lists dot m0n0 dot ch>
 Subject:  Exchange Behind M0n0wall
 Date:  Thu, 4 May 2006 15:09:44 +0200
Hello Together

Following Issue

192.168.0.35 WAN M0n0 <---> DMZ 10.1.2.1 <---> 10.1.2.3 Windows Server

There is a MS Exchange Server Running.

When i try to connect over telnet from within the 10.1.2.1/29 Subnet i
can
Open a SMTP Session without having any problems and see the Mailserver
Envelope.

But when i try to connect over the WAN Interface (in this case from
192.168.0.77) there is only a black DOS Box which disappear as soon as a
key is
pressed. Ayone any ideas? In the Logs i do not see anything..

If i connect from the LAN Interface of the m0n0wall (10.1.1.1/28) i dont
see any problems too

May  4 13:55:38 m0n0wall ipmon[80]: 13:55:38.607678 xl2 @200:3 p
192.168.0.77,1075 -> 10.1.2.3,25 PR tcp len 20 48 -S K-S IN
May  4 13:55:42 m0n0wall ipmon[80]: 13:55:42.300069 xl2 @200:3 p
192.168.0.77,1076 -> 10.1.2.3,25 PR tcp len 20 48 -S K-S IN
May  4 13:56:08 m0n0wall ipmon[80]: 13:56:08.397862 xl2 @200:3 p
192.168.0.77,1078 -> 10.1.2.3,25 PR tcp len 20 48 -S K-S IN

 
List of active sessions:
RDR 10.1.2.3        25    <- -> 192.168.0.35    25    [192.168.0.77
1080]
age 464 use 0 sumd 0x4b38/0x4b38 pr 6 bkt 1335/1388 flags 1 drop 0/0
ifp xl2 bytes 296 pkts 7

Thanks for any hints

Simon