When you install a brand new linux machine, one of the things that is usually setup for you is a daily report of the system, sent by email to the root user.
If you're like me, you only notice it a month later when you've got a spool file with 30 emails or so.
And now, for the tip.
Two steps to solve the spool problem. Firstly, setup a .forward file on root's homedir with your email.
echo (your email) > ~/.forward
will take take of that quite nicely.
Test the config by sending a mail to root.
mail -s test root
will send the message as soon as you press Ctrl+d.
With the mail going to the correct address, the next step is to flush all those mail messages back through the mail pipe so you receive them on your email account.
formail -s /usr/lib/sendmail (your email) < /var/spool/mail/root
will do that for you. All that's missing if to clean up the queue, since you've got those messages out of the system.
cp /dev/null /var/spool/mail/root
is what you're looking for.
And that's all for today!