Mhh..... it looks like you have to deal with the pruning option in zimbra user crontab.
....
# Log pruning
#
30 2 * * * find /opt/zimbra/log/ -type f -name \*.log\* -mtime +8 -exec rm {} \; > /dev/null 2>&1
#
.....
the "+8" there should remove each log file older than 8 days.
I'll try this... thanks for the help
P.S. may I edit this crontab line: there's a "# ZIMBRASTART -- DO NOT EDIT ANYTHING BETWEEN THIS LINE AND ZIMBRAEND" that scares me
