cron, rsync and permissions

[GianLuca Sarto]

Hello,

I am at my first attempts with scripting, cron, and rsync, so please 
bear with me...

The scope is to backup two servers from a dedicated backup pc, with the 
following script:

mv *.log archive
rsync --log-file=oracle.log -av -e "ssh -i .ssh/rsync-key" 
gian at oracle:/home/gian/exp* oracle/
rsync --log-file=vib_home.log -av --delete --exclude=".*/" -e "ssh -i 
.ssh/rsync-key" gian at vib:/home/ vib_home/
rsync --log-file=vib_office.log -av --delete -e "ssh -i .ssh/rsync-key" 
gian at vib:/office/ vib_office/

This script works fine from the command line, but the last two lines 
hang with permissions errors when executed as cron job.
The cron job is in my user table.

First backup from server oracle works fine, because the two files copied 
are in my home directory, so no permission issues.

The second backup hangs with this error:

2008/04/17 02:00:28 [6161] receiving file list
2008/04/17 02:00:28 [6161] rsync: opendir "/home/gabri/Maildir" failed: 
Permission denied (13)
2008/04/17 02:00:28 [6161] rsync: opendir "/home/enzo/Maildir" failed: 
Permission denied (13)
2008/04/17 02:00:28 [6161] rsync: opendir "/home/enzo/Mail" failed: 
Permission denied (13)
2008/04/17 02:00:28 [6161] rsync: opendir "/home/francesco/Maildir" 
failed: Permission denied (13)
2008/04/17 02:00:28 [6161] rsync: opendir "/home/deborah/Maildir" 
failed: Permission denied (13)
2008/04/17 02:00:28 [6161] rsync: opendir "/home/deborah/mail" failed: 
Permission denied (13)
2008/04/17 02:00:28 [6161] rsync: opendir "/home/lost+found" failed: 
Permission denied (13)
2008/04/17 02:00:28 [6161] rsync: opendir "/home/william/Maildir" 
failed: Permission denied (13)
2008/04/17 02:00:28 [6161] rsync: opendir "/home/faxmaster/Maildir" 
failed: Permission denied (13)
2008/04/17 02:00:28 [6161] rsync error: errors with program diagnostics 
(code 13) at log.c(230) [receiver=2.6.9]

I do not have read permissions for the folders above, but I can read all 
the rest.
Why rsync aborts?

The third backup reports this:

2008/04/17 02:00:33 [6163] receiving file list
2008/04/17 02:00:33 [6163] rsync: opendir "/office/lost+found" failed: 
Permission denied (13)
2008/04/17 02:00:33 [6163] rsync error: errors with program diagnostics 
(code 13) at log.c(230) [receiver=2.6.9]

The same here.
I have read permissions for all folders excepting for lost+found.
Why rsync gives up on the first error?

As I said, launching ./backup.sh from command line the script warns 
about permission errors, but goes on.

Thanks for your time,
cheers,
-Gian