I need to rebuild my reseller.list file

If your reseller.list file becomes corrupt, you can run the command below to rebuild it.
Corruption can happen during any process that writes the reseller.list file if multiple processes are saving the file at the same time (locking issue).  Things like backup restores in the background could in theory cause it, while browsing in DA.

Login to ssh as root, and type:

cd /usr/local/directadmin/data
grep -H "usertype=reseller" users/*/user.conf | cut -d/ -f2 > admin/reseller.list