Postfix errors

[redhatdude at bellsouth.net]

Hello
I'm getting these errors in maillog and I don't know what they mean  
or how to fix them. I'm running Postfix with cyrus-imapd and  
squirrelmail. Please advice.
Thanks

error bellow:

lmtpunix[16008]: IOERROR: fstating sieve script /var/lib/imap/sieve/e/ 
ej/defaultbc: No such file or directory
lmtpunix[16008]: duplicate_check:  
<33759.67.116.53.52.1122503020.squirrel at www.daviszone.org> user.ej