On my zimbra 6.10 NE, I changed 10 days ago the mail backup location from the zimbra install partition to another partition. At that time I manually triggered a backup, which worked correctly.

However, since that day, my daily backup just seemed not to work anymore.

After a quick inspection, as the zimbra user, launching the following commands fails:
/opt/zimbra/bin/zmbackup -i
Error occurred: Invalid backup target: Backup target /removabledd/zimbra-backup does not exist

however, of course:
ls /removabledd/zimbra-backup -lrtd
drwxr-xr-x 4 zimbra zimbra 4096 2011-03-26 18:36 /removabledd/zimbra-backup

There are clearly at least two issues:
- the test of existence of the backdir seems to fail erroneously
- when the backup fails, not warnign is oissued (since backups are triggered form a cron, with no email adress indicated in the cron for reporting warning...).

How could I make the backup working again from zimbra'cron ?