all failed deliveries returns to root

[knocx]

Hello,

all client failed deliveries returns to root, i cant determine why this is happening , i couldnt found any settings on qmail

some examples are below any ideas will be great

To: dbmaster@example.com
Subject: vBulletin Database Error!
From: dbmaster@example.com

Database error in vBulletin :

Invalid SQL:

SELECT *
FROM datastore
WHERE title IN ('','options','bitfields','attachmentcache','forumcache','usergroupcache','stylecache','languagecache','products','pluginlist','cron','profilefield');

MySQL Error : Table 'sentez.datastore' doesn't exist
Error Number : 1146
Date : Sunday, March 18th 2007 @ 10:08:30 PM

------------------------

To: dbmaster@example.com
Subject: vBulletin Database Error!
From: dbmaster@example.com

Database error in vBulletin :

Invalid SQL:

SELECT *
FROM datastore
WHERE title IN ('','options','bitfields','attachmentcache','forumcache','usergroupcache','stylecache','languagecache','products','pluginlist','cron','profilefield');

MySQL Error : Table 'sentez.datastore' doesn't exist
Error Number : 1146
Date : Sunday, March 18th 2007 @ 10:13:30 PM