RE: Configure qmail using two ethernet card.

[Ihnen, David]

You cannot configure an application to only use a particular physical interface - physical interfaces are isolated from applications by the layers of the IP stack.   You CAN have it listen on a particular IP address only, so that it doesn't respond to the IP address that is assigned to another port though.  But that doesn't guarantee anything.   Outbound routing is handled by the kernel routing table.   Once a packet arrives on an interface, it enters the IP stack and gets responded to appropriately - regardless of which physical interface it came in on.   David     -----Original Message----- From: Mark Lo [mailto:[EMAIL PROTECTED]] Sent: Friday, September 08, 2000 1:20 AM To: [EMAIL PROTECTED] Subject: Configure qmail using two ethernet card. Hi,      I have some technical issue to ask.  Okay..I have a web server and mail server located side by side.  The web server is used to send all of the on-line inquires to the mail server.  So I would like to ask how to configure qmail to accept incoming messages by using specific etherent card.  From web server's ethernet care directly to mail server's ethernet card.  Assume I have two ethernet card for both web and mail server.  one ethernet card is to listen from the outside world.   Thank you   Mark