Mac Forum / General / Networking / February 2007

Hi.  Mail is not arriving (and has never arrived) to my home machine
and I'm looking for troubleshooting ideas.

My machine lives in a network centered around an AirPort Express
hub sitting in my living room.  I connect to the internet via a
cable modem, but my machine has a static name (let's call it
utopia.homeip.net) assigned to it by the good folks at dyndns.org.
I use port mapping to map a few ports to my machine (10.0.1.2).
These ports include 80 and 22, and they work great: I have no
problem viewing the websites running on my machine, or ssh-ing into
it, from "the outside".  So far so good.

I want to be able to also receive mail directly at this machine.
To this end, I edited the file /etc/postfix/main.cf, and added the
following configs:

myhostname = utopia.homeip.net
myorigin = $myhostname
inet_interfaces = $myhostname, 10.0.1.2, localhost

and I stopped and started postfix:

% sudo postfix stop
% sudo postfix start

In addition, using the AirPort Admin Utility, I mapped ports 143
and 993 to 10.0.1.2 (basically the same procedure I used successfully
to map other ports to the machine).

OK, after all that, I get no mail at this machine.  I turned on
verbose logging (via AirPort Admin Utility > Configure > AirPort

at all right after I send myself a message to yourstruly@utopia.homeip.net.

At this point I've reached the end of my troubleshooting prowess.
What else can I do to pinpoint the problem?  Can anyone notice
anything wrong in the description of my setup?

TIA!

kj