[Mailman-Users] Exim and Mailman, address_pipe and never_users

[Daevid Vincent]

I'm running Gentoo with Exim 4.43-r2 and Mailman 2.1.5-r4.

When I send a message to my list "rbc", it never gets sent. 

The logs have some entries that look like this:

Apr  6 00:42:21 [exim] 2005-04-06 00:42:21 no host name found for IP address
10.10.10.69
Apr  6 00:42:21 [exim] 2005-04-06 00:42:21 1DJ5B7-0006dd-Cc <=
daevid at daevid.com H=(locutus) [10.10.10.69] P=esmtpsa X=TLSv1:RC4-MD5:128
A=login:dae51d S=569
Apr  6 00:42:21 [exim] 2005-04-06 00:42:21 1DJ5B7-0006dd-Cc User 0 set for
address_pipe transport is on the never_users list
                - Last output repeated twice -
Apr  6 00:42:21 [exim] 2005-04-06 00:42:21 1DJ5B7-0006dd-Cc ==
|/usr/local/mailman/mail/mailman post rbc <rbc at daevid.com> R=system_aliases
T=address_pipe defer (-29): User 0 set for address_pipe transport is on the
never_users list

I've googled for address_pipe and never_users and it seems to be Exim
related, but I really don't know what to change to fix this. I used to run
mailman 2.0 with sendmail on an old RH8 box. Exim is all new to me too.
Sorry if this is off topic.

I tried to follow the instructions here, but still no joy.
http://www.exim.org/howto/mailman21.html#exconf

Something isn't right:

daevid bin # exim -bt rbc at daevid.com
rbc at daevid.com -> |/usr/local/mailman/mail/mailman post rbc
  transport = address_pipe

When it should say:
router = mailman_router, transport = mailman_transport