Quarantine actions audit log - who,when and how disposed some quarantined items.
When there is several quarantine admins sometimes happen misunderstanding, if some of quaranteened mails passed, rejected or something else by one admin without informing others.
I should search it through a lot of log files (\wwwconf\debuglogs\QFE_ItemDetails.log, wwwconf\debuglogs\QuarWeb.log , ActionServices\Debuglogs \* etc.
It would be very nice to have QuarantineAdmins activity in one small log. Colunms are messageID, mailfrom, rcptto, date_quarantined, date_unquarantined, disposal way, admin_name.
If you go to Quarantine Settings … Malware options the last option is to turn on auditing.
In the audit log you can see all of the information.