Microsoft Exchange offers complete emailing and calendaring capabilities and is believed to be one of the most secure communication platforms that are employed in the business world. However, this doesn’t mean that Exchange mailboxes and the data stored in them are immune to damage. Exchange mailboxes or the information contained within them are invulnerable from sudden or unintentional damage or corruption.
Similar to other applications and documents, Exchange EDB files also have the potential for loss of data. Let’s examine the most frequent Exchange Server issues and errors:
i. Exchange error 1018ii. Exchange error 1216
iii. The Exchange shutdown is dirty.
iv. Unable to mount the database error
v. Exchange error 1056749110
vi. Unable to initialize Exchange Information Store service
Let’s discuss each one in greater in depth.
i. Exchange Error 1018
Exchange error 1018 ‘JET_errReadVerifyFailure’ is a result of page-level corruption found in EDB files. The Exchange database files are an assortment of four 8 KB and a total of 12 KB, and 16 pages, each with the B-tree format. The database page is a reference towards the following or previous page to facilitate faster pages traversal. Two of the first pages within Exchange Exchange database are accessible through the header section and so the third page is considered to be the initial logarithmic page.
Like page numbers the page checksum is an important concept that is calculated mathematically, and the resultant value is noted in the header of every page. If there’s a mismatch the page becomes in a state of corruption, making it inaccessible. Sometimes, issues with the NTFS files, improper computation of checksums, writing checksums at an the wrong location, or writing overwritten data causes Exchange error 1018.
ii. Exchange Error 1216
When the header information assessment in the database and log files specifies that some crucial files are modified or removed, Exchange error 1216 ‘JET_errAttachedDatabaseMismatch’ appears. If an instance of the Storage Group ceases abruptly this causes the appropriate error message. If a recovery procedure is applied then the Storage Group could re-start at some point but some files might be deleted or lost in the process.
Sometimes, it’s impossible to add the information that was lost in the storage group. In certain instances, the inconsistent data are discovered in the header information after it is discovered that the Storage group is restarted. The manual approach to resolving MS Exchange Server issues is difficult and can be risky and could result in the possibility of significant data loss. So, it is suggested to utilize a professional tool for recovering mailboxes to recover lost and unaccessible information.
iii. Exchange Dirty Shutdown Error
Every single addition of data or change made to the database are monitored through the log files of transactions. Inconsistencies within the transaction log files could affect the performance that is provided by your Exchange database. In extreme instances the database is unable to begin and can affect the entire server environment. There are numerous reasons for this situation, but sometimes it’s because the server isn’t shut down properly, thus the result is an ‘Dirty Shutdown’ condition.
In these situations, it is recommended to backup the log files often and not erase them forever. If necessary, erase the files after making sure that the backup has been constructed and the database file is redundant and therefore no longer required to be used in the future. In many instances, the irresponsible behavior by one of the hardware components causes the Exchange database into the constant mode. To ensure a smooth shut down of the database ensure that all log files are successfully committed to the database. Then, the status of the log files is shown as detached.
iv. Unable to mount the database error
If the database is in a state that is inconsistent and it is recovered from backup an error message could occur when you attempt to mount Mailbox Store. Mailbox Store. The error message is that “Exchange cannot mount the database you’ve specified. Specified database: Servername\First Storage Group\Mailbox Database; Error code: mapiExceptionCallFailed: Unable to mount database. (hr=0x80004005 Ec=-528, hr=0x80004005.).” Incomplete log files for transactions is one of the reasons for an error code.
This can lead to the Exchange database into a filthy shut down condition. This must be dealt with immediately in order to ensure that the database is functional. Whatever attempts to fix this issue was made the same error message could occur every time. To get the database into a regularity, it is essential to close from the Exchange Information Store as well as the other databases within this storage group.
v. Exchange error 1056749110
Moving of Exchange mailboxes is the principal task that every administrator has to complete. In some instances, when doing the process the process is not successful and shows the error code 1056749110. There are a variety of methods to retrieve mailboxes using Windows Server Backup and implement different stages, such as
(i) backing up Exchange Server Mailbox database; (ii) Restoring Exchange database to a different place; (iii) using Eseutil and restoring the database back to its clean shutdown state; (iv) creating an Exchange Server Recovery database; and (v) the restoration of mailbox items from the recovery database.
The error message for code 1056749110 appears as “Restore-Mailbox Error occurred for RSG Test due to error occurred during the process of moving messages. This mailbox was in excess of the maximum amount of items that were corrupted in this move operation and the error code is 1056749110″. This means that corrupted items are present within the mailbox. The solution is to fix the mailbox that contains damaged objects of the Recovery Storage Group to a production mailbox.
vi. Unable to Initialize Exchange Information Store Service
After beginning Exchange Server 2010/2007, after starting the Exchange Server 2010/ 2007 service, if the process to start Information Store fails, Information Store fails, the error message “Unable to initiate the Microsoft Exchange Information Store service Error code 0x8004010f” occurs and interferes with the smooth operation of the Server. The reason for this error is because the it occurs that the clock on the Server does not sync with the clock on the client’s computer. To resolve the problem it is necessary for you to reboot this Exchange Active Directory Topology service.
The most common causes that lead to the error code are
(i) delete the default Recipient Policy from the ‘Email address policies tab’ and (ii) substituting the default policy using a custom email address policies. The manual procedure to fix the issue is much longer and time-consuming. Any mistake could result in mailbox unavailability or even permanent loss of information.