I have been running Exchange 2010 for a little while now and it has been great. Out of the blue I had a user getting failed emails, below if the message. The mailbox could be accessed, but no mail in or out. This has since happened in two additional mailboxes, but it seems intermittent. I have had ZERO luck in finding a root cause for this. Any help is appreciated.

> 
> user@domain.com
>  #550 5.2.0 STOREDRV.Deliver: The Microsoft Exchange Information Store
>  service reported an error. The
>  following information should help
>  identify the cause of this error:
>  "MapiExceptionJetErrorReadVerifyFailure:...,
>  255.23226:0F010480, 255.27962:0E000000, 255.31418:0F010480, 16.18969:82010000, 17.27161:0000000028000000000000000000000000000000,
>  255.23226:0F010480, 255.27962:0E000000, 255.31418:17010480, 16.18969:5E010000, 17.27161:0000000028000000000000000F00000000000000,
>  255.23226:2D000000, 255.27962:0E000000, 255.31418:13800000, 16.18969:1C020000, 17.27161:000000004A020000000000002E00000000000000,
>  255.23226:2D000000, 255.27962:0E000000, 255.27962:0A000000, 255.27962:9E000000, 255.17082:06FCFFFF, 0.18273:00000000, 4.21921:06FCFFFF, 255.27962:FA000000, 255.1494:0E000000, 255.1238:38010000, 4.10484:0F010480, 6.14164:1DFAFFFF030002590F010480, 6.8660:0F0104800300025903001100, 0.18658:0F010480, 6.11956:0F01048003000259B0840110, 4.10484:0F010480, 6.14164:1DFAFFFF0B0002000300DD3F, 6.8660:0F0104800B0002000F010480, 0.18658:40001900, 6.11956:0F0104800B0002000F010480, 4.10484:0F010480, 4.13236:06FCFFFF, 4.6993:06FCFFFF, 4.5041:06FCFFFF, 4.4465:06FCFFFF, 4.6833:06FCFFFF, 0.50217:0F010480, 4.5093:06FCFFFF, 4.5318:06FCFFFF, 4.10104:06FCFFFF, 0.57449:0F010480, 4.6025:05000780, 4.5257:05000780, 4.4606:06FCFFFF, 255.1750:00000000, 0.26849:00000000, 255.21817:06FCFFFF". ##
> 
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