[Exim] Mailman and exim problem (qrunner not delivering)?

I have been having a problem with a mailman installation on my box which
died seemingly out of the blue (not related to any installs or updates)
last week. I'd previously had the same problem, and a reinstallation of
mailman fixed it.

Now, however, reinstalling doesn't fix it.

I don't know if this is an exim or a mailman problem, which is why I'm
posting logs to both lists (mailman-users had a one-day head start, but
has yet to provide much guidance). Is there anything I can do to get
more data on the exim end to see if it's an exim problem?

Reinstalling exim (from scratch) also did not seem to work.

Thanks,

--m

> On a different machine, I do this:
>
> zuikis.uchicago.edu -20:22:57- ~ > echo "hi" | mail test@???
>
> The following are commands run on the mailman server
> (and there was nothing appropriate in mailman/logs/error)
>
> lithchat.com:/mailman/logs# ../bin/version
> Using Mailman version 2.0.6
>
> lithchat.com:/mailman/logs# uname -a
> Linux nida 2.2.19 #1 SMP An Rgp 14 21:36:28 CDT 2001 i586 unknown
>
> lithchat.com:/mailman/logs# exim -bV
> Exim version 3.32 #1 built 15-Aug-2001 00:13:26
> Copyright (c) University of Cambridge 2001
>
> lithchat.com:/mailman/logs# tail -2 /var/log/exim/mainlog
> 2001-10-22 20:22:32 15vqH2-0002FP-00 <= moacir@??? H=zuikis.uchicago.edu [128.135.57.157] P=esmtp S=490 id=200110230124.UAA02591@???
> 2001-10-22 20:22:33 15vqH2-0002FP-00 => test <test@???> D=list_director T=list_transport 2001-10-22 20:22:33 15vqH2-0002FP-00 Completed
>
> lithchat.com:/mailman/logs# tail -1 post
> Oct 22 20:25:02 2001 (8668) post to test from moacir@???, size=138, 1 failures
>
> lithchat.com:/mailman/logs# tail -1 smtp-failure
> Oct 22 20:25:02 2001 (8668) -1 moacir@??? (ignore)
>
> lithchat.com:/mailman/logs# tail -2 smtp
> Oct 22 20:25:02 2001 (8668) All recipients refused: host not found
> Oct 22 20:25:02 2001 (8668) smtp for 1 recips, completed in 0.089 seconds
>
> lithchat.com:/mailman/logs# tail subscribe
> Oct 22 02:32:57 2001 (2363) test: new moacir@???
>
> lithchat.com:/mailman/logs# python -S ../cron/qrunner
>
> lithchat.com:/mailman/logs# tail -1 smtp-failure
> Oct 22 20:36:01 2001 (8744) -1 moacir@??? (ignore)
>
> lithchat.com:/mailman/logs# tail -2 smtp
> Oct 22 20:36:01 2001 (8744) All recipients refused: host not found
> Oct 22 20:36:01 2001 (8744) smtp for 1 recips, completed in 0.086 seconds
>
> lithchat.com:/mailman/logs# tail -7 /var/log/exim/mainlog
> 2001-10-22 20:22:32 15vqH2-0002FP-00 <= moacir@???
> H=zuikis.uchicago.edu [128.135.57.157] P=esmtp S=490
> id=200110230124.UAA02591@???
> 2001-10-22 20:22:33 15vqH2-0002FP-00 => test <test@???>
> D=list_director T=list_transport
> 2001-10-22 20:22:33 15vqH2-0002FP-00 Completed
> 2001-10-22 20:23:01 Start queue run: pid=8653
> 2001-10-22 20:23:01 End queue run: pid=8653
> 2001-10-22 20:38:01 Start queue run: pid=8757
> 2001-10-22 20:38:01 End queue run: pid=8757