[Debian] Mail System Possibly Broken Failed

Assalamualaikum wr wb

aku berbagi sedikit ilmu yang ku punya,
tadi temeku sempet bertanya ke saya kok seperti ini 
ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken … failed! ??
apa yang salah dan caranya bagaimana agar tidak failed?

kemudian aku bertanya kepada mbah google dan mbah memberikan solusi yang aku cari, dan ini caranya untuk mengatasinya :

Code :
root@cool:~# tail -100 /var/log/mail.log
Mar 5 06:25:05 cool exim4: ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken
Mar 6 06:25:04 cool exim4: ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken
Mar 7 06:25:03 cool exim4: ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken
Mar 8 06:25:04 cool exim4: ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken

root@cool:~# /etc/init.d/exim4 restart
Stopping MTA for restart: exim4_listener.
Restarting MTA: exim4.
ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken … failed!

root@cool:~# tail /var/log/exim4/paniclog
2012-02-26 03:13:05 1S0jeM-0006ef-Rg spool file write error while delivering: No space left on device

root@cool:~# rm /var/log/exim4/paniclog
root@cool:~# /etc/init.d/exim4 restart

dan ini lah caranya untuk mengatasinya
sekian  TS dari ane semoga bermanfaat buat temen" smua.

Wassalamualaikum wr wb