queue pileup

This one's got me way stumped. Been banging my head on it for three days 
now.

Suddenly, list mail seems to get stuck in majordomo's queue system. 
Postfix (2.4.5) seems to be working fine. Plenty of mail moving in and 
out.

I don't see any obvious problems in the maillog, but I'm not terribly 
good at reading those. Here's an example entry:

Nov 20 13:36:31 ldc566 postfix/local[23384]: 211AA50C540: 
to=<[email protected]>, relay=local, delay=0.12, 
delays=0.05/0/0/0.07, dsn=2.0.0, status=sent (delivered to command: 
/usr/local/majordomo/bin/mj_enqueue -r -d interversity.com -l testlist 
-P10 -p10)

I've tried reinstalling majordomo several times, using snapshots from May 
through Nov17. Everything seems to work fine except that no mail is 
actually delivered.

Any suggestions where I can look next to diagnose this? anybody ever had 
something similar?

Thanks in advance!

--Eric Crump

Here's the .mj_config particulars, if it helps. I have several virtual 
domains but only listed on as an example since they are set up the same 
except for the domain name.
           'save_passwords' => 0,
           'sepclear' => 0,
           'ignore_case' => 1,
           'tmpdir' => '/usr/local/majordomo/tmp',
           'majordomocf' => '/etc/majordomo/majordomo.cf',
           'lists_dir' => '/usr/local/majordomo/lists',
           'wtmpdir' => '/tmp',
           'domain' => {
             'interversity.com' => {
             'owner' => '[email protected]',
             'whereami' => 'interversity.com',
             'old_lists' => 0,
             'addr_strict_domain_check' => 1,
             'site_name' => 'Lists at Interversity.Com',
             'whoami' => 'majordomo'
             },
           }
           'mta_separator' => '+',
           'cgi_url' => 'http://interversity.net/cgi-bin/',
           'lockdir' => '/usr/local/majordomo/tmp/locks',
           'mta' => 'postfix',
           'queue_mode' => 0,
           'startperl' => '/usr/bin/perl',
           'database_backend' => 'db',
           'queue_timeout' => '180',
           'language' => 'en',
           'uid' => 'majordomo',
           'version' => 13,
           'queue_concurrency' => '6',
           'wrappers' => 1,
           'maintain_mtaconfig' => 1,
           'queue_chld_ignore' => 1,
           'install_dir' => '/usr/local/majordomo',
           'domains' => [
                          'interversity.com',
                        ],
           'cgi_link' => 0,
           'sendmail_maintain_vut' => 1,
           'umask' => '077',
           'cgi_bin' => '/var/www/cgi-bin',
           'gid' => 'majordomo'