Exchange Server 2007 Transport: 452 4.3.1 Insufficient system resources

June 5th, 2009

Received this error code when sending test emails, client informs that they can send email but not receive.

It appears that the Queue needs at least 4G of free disk space for email to be delivered so: FREE up disk space.

What’s Back Pressure?
In Exchange Server 2007, the Transport service monitors system resources such as disk space and memory on Transport servers (the Hub Transport and the Edge Transport servers), and stops message submission if it is running low on these resources. It continues to deliver existing messages in the queue. When resource utilization returns to normal, it resumes message submission. The feature is called Back Pressure.

Changes to Back Pressure settings in Exchange Server 2007 SP1

The Back Pressure settings in Exchange Server 2007 RTM stop inbound mailflow if free disk space is below 4 Gigs. This static threshold has been lowered in SP1 to a more realistic 500 Mb.

The Resolution
Many configuration options for transport servers are saved in an XML file named EdgeTransport.exe.config (same file name on both Edge and Hub Transport servers) located in \Exchange Server\Bin\. You can edit the file to disable Back Pressure, or modify the parameters to more accurately define what’s high utilization for your deployment or server configurations, as explained in the above docs.

Another resolution, and the one I used in this case, was to move the Queue database to another volume with ample of free space, using the following procedure:
Add the following key in the section in EdgeTransport.exe.config:

Restart the MSExchangeTransport service, and message submission resumes

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Backup Exec and changed passwords

May 13th, 2009

If you change the domain administrator account password and this same account was used to install Backup Exec, you will need to make sure the SLA (see below) is updated as well or else the backup jobs may fail. This SLA is not the same as the account credentials that each individual backup exec service runs under.

The Backup Exec System Logon Account (SLA) is created on installation of Backup Exec. When the SLA is created, the username and password match the credentials provided during install for the Backup Exec Services credentials. The owner of the SLA is the Windows user that installed Backup Exec and is a common account by default. Common accounts are shared accounts that can be accessed by all users.

The Backup Exec System Logon Account may have access to most or all of the resources since it contains the Backup Exec Services credentials. In order to make Backup Exec more secure, the SLA can be changed to be a restricted account or can be deleted.

However, if the SLA is deleted, the jobs in which it is used may fail. If the SLA is deleted, it can be recreated by performing the steps given below:

1. Select the Network | Logon Accounts menu option. The Logon Account Management dialog box will appear (Figure 1).

Figure 1

2. Click on the System Account button on the right which will bring up the figure given below (Figure 2)

Figure 2

3. In the Edit Logon Credentials screen, enter the User name in the format <domain name>\<user name>

4. Select the This is my default Logon account check box and click OK

5. This will create the System Logon Account as shown below (Figure 3)

Figure 3

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Access Network Settings through run command

May 3rd, 2009

Quickly access Control Panel items through the run command:

control ncpa.cpl Network Settings
control desk.cpl Display Settings

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Installing VMware Additions on Windows Server 2008 Server Core Installations

May 3rd, 2009

Just setup a server 2008 core on VMWARE ESX and need to get the VMWare Tools installed. Server Core 2008 allows you to install through msiexec , but to install tools you need to VMware Install VMWare tools , this mounts the CD/DVD Rom Drive.

Then launch “VMWare Tools.msi” through the command prompt.

Thanks as well to http://www.petri.co.il/installing-vmware-additions-on-windows-server-2008-server-core-installations.htm

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Exchange System Manager Error when viewing IMF and Public Folders

May 2nd, 2009

Exchange 2003 system manager crashes when you try to click on help in the IMF menu as well as view public folders.
The cause I have found out IE 7.0 and a little file called Psapi.dll .

Found this Microsoft Kb article to fix it it has now been resolved.

http://support.microsoft.com/kb/932513

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Symantec Backup Exec Licence Keys , How to view

April 25th, 2009

With the Media Server I click Tools—->Licences and Installations and nothing happens, I need to find my license keys for a version upgrade. Not to worry Symantec stores all keys in an XML file :
located under Documents and Settings\All Users\Application Data\Symantec\Backup Exec The filename
BESERNUM.XML

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NetBIOS over TCP/IP Name Resolution and WINS

April 23rd, 2009

Yes WINS is still alive on legacy networks and yes we know that it should not be used on any new Windows 2008 networks. However when installing by adding features in Windows Server 2008, an understanding of Node-Type to configure when configuring DHCP Server is important.

Found this very useful: http://support.microsoft.com/kb/119493

H-Node is the best as clienst will check with WINS Server database prior to any B-node (broadcast) This means broadcast is a last resort when trying to find resources etc on the network. Remember that we all love DNS though as it is the key to Microsoft Active Directory Functioning

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rundll32 printui.dll,PrintUIEntry To add and remove printers

April 21st, 2009

How do I add printers or remove printers through login script in Windows 2003 using
rundll32 printui.dll,PrintUIEntry

1) This installs printer quietly
rundll32 printui.dll,PrintUIEntry /in /q /n\\servername\printername

2) This deletes the networked printer from the machine being logged onto, and does so quietly.
rundll32 printui.dll,PrintUIEntry /dn /q /n\\servename\printername

3) This Sets the default printer
rundll32 printui.dll,PrintUIEntry /y /n\\servername\printername

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How to recover from an Active Directory corruption with no System State Backup

April 21st, 2009

Had a situation where due to power failure the Active Directory database shows corruption, DSRM (Directory Service Restore Mode) and all the NTDSUtil recovery tools did nothing to help the situation. ie NTDSUTIL files integrity and semantic database analysis.

No local system state backup but had one AD machine with FSMO’s still online. The AD server that was offline had critical files that needed to be accessed. The server would loop in DSRM and try and repair the database but HAD NO JOY here.
The only solution was http://support.microsoft.com/kb/332199/

After a single registry change the domain controller sees himself as a member server, was able to login to the machine and rejoin the domain successfully. Only cleanup was to rsynch Dfs replication again.

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Outlook 2007 Certificate Error.

April 16th, 2009

Have recently purchased and installed a third party certificate onto Exchange 2007 IIS and all Outlook 2007 users started receiving a Certificate Error , it show the name of the new FQDN certificate and NOT the self assigned anynmore.

Found this excellent post that resolved this issue straight away.
http://www.shudnow.net/2007/08/10/outlook-2007-certificate-error/

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