Check parameters you can check to see if zmdailyreport is producing output with
/opt/zimbra/libexec/zmdailyreport -md
for mail/debug.
I believe the last line will show where it is attempting to email the report. My guess is that one of the parameters is missing, such as the destination of the report. If this is the case, check to see if the zimbraSmtpHostname parameter is set with:
zmprov -l gcf zimbraSmtpHostname
If this value is blank, you will not be able to send the report. You can set it with
zmprov -l mcf zimbraSmtpHostname yourhostname''
Otherwise, use zmlocalconfig | grep smtp to see if the smtp_destination is set. |