[Mailman-Users] Postfix & Mailman not playing well together

[Michael Soh]

Good morning all!

I'm hoping you guys might be able to help me figure out what's going on with
my mailman setup.

I'm running 2.1.13 on a Ubuntu 10 installation.  I'm running postfix as my
MTA.  I've set up postfix as instructed on the list.org documentation.  I'm
running into a problem that I can't seem to get my head around.

When I e-mail the list, I get a bounce with the following information:

This is the mail system at host hotdog.mikesoh.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<"|/var/lib/mailman/mail/
mailman post somelist"@mikesoh.com> (expanded from
   <somelist at lists.mikesoh.com <epicfail at lists.mikesoh.com>>): User unknown
in virtual alias table

Final-Recipient: rfc822; "|/var/lib/mailman/mail/mailman post somelist"@
mikesoh.com
Original-Recipient:
rfc822;somelist at lists.mikesoh.com<rfc822%3Bepicfail at lists.mikesoh.com>
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; User unknown in virtual alias table

The weird part is the command that I've highlighted in green.  For some
reason, postfix or mailman (I haven't been able to determine which one) is
appending "@mikesoh.com" to the command.  When I run the command exactly
within a terminal, it says no such list exists.  However, if I only run the
command within the quotes, it runs correctly.

I can't seem to figure out why this is.  I've posted my postfix config on a
pastebin:
http://paste.ubuntu.com/610641/

Can anyone offer me a clue?

Thanks!

Mike