Errors with Sendmail?

[michaela]

I just recently checked my /var/log/messages file on one of my servers and 
got this lil' surprise....

(sysadmin at ftpweb)-># tail -f /var/log/messages

Dec 16 03:02:54 ftpweb sendmail[6903]: iBG82sfQ006903: SYSERR(root): 
savemail: cannot save rejected email anywhere
Dec 16 03:02:55 ftpweb sendmail[6950]: iBG82sJZ006950: 
Losing ./qfiBG82sJZ006950: savemail panic
Dec 16 03:02:55 ftpweb sendmail[6950]: iBG82sJZ006950: SYSERR(root): 
savemail: cannot save rejected email anywhere
Dec 17 03:02:54 ftpweb sendmail[8254]: iBH82sor008254: 
Losing ./qfiBH82sor008254: savemail panic


What's causing this and how may I resolve it?

Thank You! :)