Duh...  That's what I started out thinking, and I let someone convince me
that 25 was bi-directional and handled both on a LAN.  Excuse me while I go
Snipe hunting. :)

> -----Original Message-----
> From: Peter van Dijk [mailto:[EMAIL PROTECTED]]

> The users connect thru the dial-up server (which is
> completely transparent
> to them) to port 25 on the qmail server to _send_ mail. They get their
> incoming mail thru POP3 (port 110 on the qmail server).

So do the connections actually go through ports 25 and 110 on the dial-up
server to connect to ports 25 and 110 on the mail server?  I assume the
dial-up server sees a request to send/receive mail using a certain server
and then makes the appropriate connections.  But since it's transparent to
the requesting program, does it still have to use the same ports?  For some
reason I've always had trouble understanding the "port" concept.  Almost as
bad a trying to figure out which direction electricity flows in!  :)

        -wade

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