<div>
Can you post the exact error message along with event id.<br />
<br />
Where is the error event is occurring is it on domain controller or exchange server?<br />

</div>


Can you post the exact error message along with event id.

Where is the error event is occurring is it on domain controller or exchange server?


<div>
Referring to this article: <a href="http://www.eventid.net/display.asp?eventid=1022&eventno=1038&source=MSExchangeIS%20Mailbox%20Store&phase=1" rel="ugc">http://www.eventid.net/display.asp?eventid=1022&eventno=1038&source=MSExchangeIS%20Mailbox%20Store&phase=1</a><br />
<br />
thanks,
</div>


Referring to this article: http://www.eventid.net/display.asp?eventid=1022&eventno=1038&source=MSExchangeIS%20Mailbox%20Store&phase=1 [http://www.eventid.net/display.asp?eventid=1022&eventno=1038&source=MSExchangeIS%20Mailbox%20Store&phase=1]

thanks,

<div>
@ Awinish <br />
<br />
The error on the Exchange ,<br />
<br />
Logon Failure on database &quot;xxxxxxxx&quot; - Windows account NT AUTHORITY\NETWORK SERVICE; mailbox &nbsp;Error: 1144 , EventID = 1022<br />
<br />

</div>


@ Awinish

The error on the Exchange ,

Logon Failure on database "xxxxxxxx" - Windows account NT AUTHORITY\NETWORK SERVICE; mailbox  Error: 1144 , EventID = 1022



<div>
Is it the same account...if so have u made any changes or installed a new AV package that could be causing errors...or the backup software could be the other thing to look at if it is 3rd party
</div>


Is it the same account...if so have u made any changes or installed a new AV package that could be causing errors...or the backup software could be the other thing to look at if it is 3rd party

<div>
Did you do any migration of mailbox from ex2003 to 2007 server?<br />
<br />
It can be there is corruption in the mailboxes too,due to which these events are occuring &amp;&nbsp;try to disable or disconnect &amp;&nbsp;see the error is gone.<br />

</div>


Did you do any migration of mailbox from ex2003 to 2007 server?

It can be there is corruption in the mailboxes too,due to which these events are occuring & try to disable or disconnect & see the error is gone.


<div>
<div class="content wysiwyg-content">
I am seeing lot of errors in event logs referring Logon failures with different mail boxes ( Error: 1144 , EventID:1022) ,it's seems like unknown error to me, However, I am on the process of building a new Domain Controller and maybe that could help.<br />
<br />
please advice with a solution if it's known error to you<br />
<br />

</div>
</div>


I am seeing lot of errors in event logs referring Logon failures with different mail boxes ( Error: 1144 , EventID:1022) ,it's seems like unknown error to me, However, I am on the process of building a new Domain Controller and maybe that could help.

please advice with a solution if it's known error to you



Logon Failure on database

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

Active Directory

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.