When having trouble with email and the following error in the exim_paniclog on a cpanel server:
User 0 set for local_delivery transport is on the never_users list
The issue appears to be with some of the libraries the following commands should fix it:
# ln -s libdb2.so.3 libdb.so.3
# /scripts/eximup –force
# /etc/rc.d/init.d/exim restart