Hello,

I just installed Wireshark on WinXP and I have a question.  I have 
Internet access through a cable modem and, thus, I have a LAN IP 
address (192.168.1.102) as well as an Internet DHCP IP address.  I 
have a mail server running on my machine that is only visible to the 
LAN.  The various email clients on my machine (Eudora, Outlook, etc.) 
seem to work fine using the LAN mail server for local email to each 
other as well as the mail server supplied by my ISP for Internet 
email.  When I run Wireshark I can see all the email and other 
activity between my LAN machine and the Internet but absolutely no 
activity between my LAN mail server and any of the LAN mail clients, 
even though they all send and receive LAN-only messages fine.  I've 
made sure that there are no filters turned on in Wireshark (at least 
I don't see any).  It seems like for LAN-only activity Wireshark 
should be finding all kinds of packets where both the source and 
destination addresses are the same, namely the LAN IP address, but it 
only seems to find packets where one of the addresses is the LAN 
address and the other is an Internet address.  Since I don't know 
much about the details of this stuff I'm probably missing something 
simple.  Any ideas would be appreciated.

Thanks,
Ray Mitchell

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