Now that we got multi-server syslog-ng working on 6.0.4, we found we were missing data in the Daily Admin Report (the new format is terrific BTW, thanks Zimbra!)
This was the same problem another user noticed here:
Daily Mail Report - missing data
So, I replied on that post and filed a bug with a proposed fix method here:
Bug 43847 – Incorrect Log File Rotation Method Causing Missing Data in Daily Admin Report and Admin Console Stats Pages
Please vote for the bug if you are seeing this same issue.
In the interim, we just set the "DAILY_TIME" to 23:55 (the zimbra crontab generates the daily mail report at 23:30 each night and does spam training at 23:45) and see what happens. I'll report back tomorrow...
Hope that helps,
Mark
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L. Mark Stone, CIO 
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