[CentOS] Command not running in crontab

[Alfred von Campe]

Mario:

> Can anoyone tell me why this command is not executed (or it is  
> without success) from crontab, but works perfectly from the command  
> line ?
> (yes, i've restarted crontab service)
>
> # clean up postmaster
> 00 30 * * * root /usr/bin/find /var/qmail/maildirs/ 
> postmaster at telbit.pt/Maildir/new -type f -print0 | xargs -0 -n 50 rm

If that is the actual crontab entry, then it is not valid, as the  
second column is the hour (there is no hour 30).  You probably want  
this:

   30 00 * * * root /usr/bin/find /var/qmail/maildirs/ 
postmaster at telbit.pt/Maildir/new -type f -print0 | xargs -0 -n 50 rm

Alfred