Hello, I had a strange problem. No search results with this forum, please advise.
CentOS 5.8, Release 7.2.1_GA_2790.RHEL5_64_20120815212042 CentOS5_64 FOSS edition.

One user said that he had only several messages in the mailbox but the system informs him about overquota. I verified, looks like true, several messages in Inbox, empty Trash, empty Briefcase, really his mailbox is empty. But overquota is warned. On disk in the zimbra store folder he had about serveral hundreds messages. And when I tried to reindex him from admin panel, really all of them reindexed (~6500 messages, 0 reindex errors). This confuses me, what kind of problem could be here ? Also I checked mailbox.log when reindexed and found this records:
Code:
2013-10-25 00:41:36,898 WARN  [ReIndex-1] [name=user@domain;mid=21287;] index - Unable to index: dkim-signature:b=aj+igdbgqmprp
2013-10-25 00:41:37,419 WARN  [ReIndex-1] [name=user@domain;mid=21287;] index - Unable to index: dkim-signature:b=gk/lxi1osrq2v
2013-10-25 00:41:38,281 WARN  [ReIndex-1] [name=user@domain;mid=21287;] index - Unable to index: dkim-signature:b=kdxs7aorxv/md
2013-10-25 00:41:38,842 WARN  [ReIndex-1] [name=user@domain;mid=21287;] index - Unable to index: list-unsubscribe:http://unisnd
2013-10-25 00:41:39,210 WARN  [ReIndex-1] [name=user@domain;mid=21287;] index - Unable to index: dkim-signature:b=odhxvgtrqvcwa
2013-10-25 00:41:39,349 WARN  [ReIndex-1] [name=user@domain;mid=21287;] index - Unable to index: subject:1251?q?=d2=e5=ec=e0_=2
2013-10-25 00:41:39,382 WARN  [ReIndex-1] [name=user@domain;mid=21287;] index - Unable to index: subject:1251?q?=d2=e5=ec=e0_=2
So, Zimbra does not indexes several messages and this is the cause of empty ZWC ? What is the cause of this index behavior? How I must resolve this error in the future?