It looks like there is a nightly process that goes through and rotates the logs in /opt/zimbra/log, however once it's done the process does not compress the files. To try to keep file space down, and retain zimbrastats.csv for historical use I want to compress the files after they have been rotated, however I'm not sure what script is actually doing this rotation.

It's not listed in logrotate, and I can't find any script that is doing it in zimbra's crontab. Does anybody know what's doing this rotation? Am I just not looking in the right spot?