There is a specific server in the company I work that uses sendmail to send multiple emails to sendgrid. The file /var/spool/mail/root is about 4.9 GB, which is taking more than 50% of the disk usage. Now, is it safe to just delete it? or do a
cp /dev/null /var/spool/mail/root
to empty it? I don't want to break the email system, and I don't know if emptying that file could make some emails to get lost in the way. I need to delete this file because disk usage is about to get to 95% and I don't want to run out of space. Thank you!