I just took a look at the /var/spool/listserv directory and was
surprised to see thousands of error files, most of which are months old.


2 questions:

a) what are these (file names are:
          number-x-supd.job.error
          listname-maildist.error  (lists which do not run on my server)
          some-odd-number.error



b) is it safe to delete them?