[root@84-45-228-40.no-dns-yet.enta.net: Cron <chris@home> rsync -r --exclude /In/ --exclude /Lirsync error message that I don't understand

[Chris G]

I'm getting this error message and I don't really understand what
rsync is trying to tell me:-

    rsync: link_stat "/rdiffBackup/gradwell/Mail/." failed: No such file or directory (2)
    rsync error: some files could not be transferred (code 23) at main.c(977) [sender=2.6.9]

Can anyone explain what it's saying please.  /rdiffBackup/gradwell/Mail/
does exist and is readable by the user running rsync.

Oh, this is rsync 3.0.0 and the command line is:-

    rsync -r --exclude /In/ --exclude /Li/ --exclude /Tm/ /rdiffBackup/gradwell/Mail/ /home/chris/MailArchive

-- 
Chris Green