MSExchange.org Monthly Newsletter of March 2011 Sponsored by: C2C Systems

Welcome to the MSExchange.org newsletter by Henrik Walther, Exchange MVP, MCA: Messaging (Exchange Ranger) Apprentice, MCTS Windows Server 2008, MCITP Exchange 2007, MCSE 2003 Messaging/Security. Each month we will bring you interesting and helpful information on Exchange Server. We want to know what all *you* are interested in hearing about. Please send your suggestions for future newsletter content to: henrik@msexchange.org

1. Exchange 2010 and UDP Support

Welcome to the March 2011 edition of the MSE Newsletter! This month we'll take a closer look at the newly added UDP support which has been made available with the recently released Exchange 2010 SP1 Update Rollup 3 (UR3).

Exchange Server 2010 SP1 Update Rollup 2, Exchange 2010 didn't have support for User Datagram Protocol (UDP) notifications. When opening a mailbox using Outlook 2003, Outlook 2003 tries to register itself to receive new message notifications. However since this notification method, unlike earlier versions of Exchange Server, wasn't supported with Exchange 2010, Outlook 2003 instead reverted to polling the Exchange server for changes in the mailbox. Despite the fact that Outlook 2003 initiates the polling behavior, the Exchange server will dictate the polling frequency. By default Outlook 2003 polls the Exchange server every 60 seconds.

Because of this, the end users would see the following symptoms:

• Outgoing e-mail messages stay in the Outbox for up to 1 minute
• New e-mail messages do not arrive in the Inbox for up to 1 minute
• Read messages will not be immediately marked read
• Items that are deleted from folders do not disappear from the folder for up to 1 minute
• Items that are moved from one folder to another folder take up to 1 minute to disappear from the original folder

There were two methods that could be used to work around the above symptoms:

• Enable cache mode for all Outlook 2003 clients
• Change the maximum polling frequency to 5 seconds

Based on customer feedback, the Exchange product group decided to re-add support for UDP notifications in Exchange 2010. This means that when Update Rollup 3* has been applied on Exchange 2010 SP1 Client Access Servers, you now have a third workaround:

• Enable push notifications

Since UDP based push notifications is the primary and most ideal method Outlook 2003 uses to receive notifications from an Exchange server, this will improve the end user experience significantly. You will no longer see delays when sending and receiving e-mail messages in online mode.

When Update Rollup 3* has been applied to the Exchange 2010 SP1 Client Access Servers in the organization, push notifications can be enabled by creating a new DWORD registry key named "EnablePushNotifications" under the following location:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeRPC\ParametersSystem

The value for the key should be set to "1" in order to enable push notifications.

To apply the changes, the Exchange 2010 Client Access Server should be restarted.

For additional information about the new UDP support in Exchange 2010, you may also want to check out this TechNet Wiki article.

Until later,
Henrik Walther
Technology Architect/Writer/Vendor
MCM: Exchange 2007 | MVP: Exchange Architecture

Important:
* Currently Update Rollup 3 for Exchange 2010 SP1 isn't available for download. For more information about why the Exchange Product group has deactivated the download link, see: Exchange 2010 SP1 Rollup 3 and BlackBerrys sending duplicate messages.

Note:
Should you have any ideas for content in future editions of the MSExchange.org newsletter, you are more than welcome to shoot me an e-mail at Henrik@msexchange.org

2. Order Henrik Walther's Exchange Server 2007 book

3. MSExchange.org Learning Zone Articles of Interest

We have a great group of articles in the Learning Zone that will help you get a handle on your most difficult configuration issues. Here are just a few of the newer and more interesting articles:     

• Podcast: Exchange 2010 Archiving (Part 2)
• Deploying Exchange Server 2007 and Office Communications Server 2007 R2 (Part 11)
• Rights Management Server and Exchange 2010 (Part 6)
• SMTP Routing in Exchange 2010 (Part 3)
• Planning, Deploying, and Testing an Exchange 2010 Site-Resilient Solution sized for a Medium Organization (Part 7)
• Using Forefront Script Kit with Forefront Protection for Exchange Server (Part 2)
• Rights Management Server and Exchange 2010 (Part 5)
• Video: Securing OWA using Threat Management Gateway 2010
• Planning, Deploying, and Testing an Exchange 2010 Site-Resilient Solution sized for a Medium Organization (Part 6)
  

4. KB Articles of the Month

Below you find the Exchange 2003, 2007, and 2010 related KB articles that were published since the last MSE newsletter.

Exchange Server 2010

• How to allow Entourage for Mac to send large e-mail messages to an Exchange 2007 server
• You cannot use an Outlook 2007 client to display or download an attachment when you access a message that includes an inline attachment from Microsoft Exchange Server
• Unified Communications Certificate Partners for Exchange Server and for Communications Server
• Folders take a long time to update when an Exchange Server 2010 user uses Outlook 2003 in online mode
• Users do not receive quota warning messages after applying SP1 for Exchange 2010
• "MAPI_E_NETWORK_ERROR (0x80040115)" error message when a client application connects to an Exchange Server 2010 server or an Exchange Server 2007 server
• XADM: Unable to add or modify users in Mail-Enabled Universal Security Group in Exchange 2010
• OWA Exchange 2010 created recurring meeting causes EWS clients to throw "Meeting message could not be correlated" exception

Exchange Server 2007 

• Resources in Exchange do not respond to meeting requests
• You cannot use an Outlook 2007 client to display or download an attachment when you access a message that includes an inline attachment from Microsoft Exchange Server
• The MsExchangeTransport service stops when the Hub server occasionally stops handling the mail flow in an Exchange Server 2007 environment
• How to allow Entourage for Mac to send large e-mail messages to an Exchange 2007 server
• Unified Communications Certificate Partners for Exchange Server and for Communications Server
• A meeting response status from an external attendee may be incorrect if you send the meeting request from an Exchange Server 2007 environment
• Duplicate read receipts are sent when you use a POP3 client or an IMAP4 client in an Exchange Server 2007
• An item is removed unexpectedly from a public folder in an Exchange Server 2007 environment
• Description of Update Rollup 1 for Exchange Server 2007 Service Pack 3
• Exchange Server 2007 SP3 does not update the Exchange Server Active Directory schema
• VSS backup fails on a passive node of an Exchange Server 2007 CCR cluster and Event ID 2034 is logged
• The values of total items that are returned by running the "Export-ActiveSyncLog" cmdlet on an Exchange Server 2007 server are incorrect
• Some body parts of a message are displayed as attachments when an Exchange Server 2007 user sends the message by using a third-party mail client
• Fax communication sessions are dropped by an Exchange Server 2007 Unified Messaging server
• A meeting request is stamped as Busy instead of Tentative when it is sent from an external user to an Exchange Server 2007 user
• Duplicate read receipts are sent when you use a POP3 client or an IMAP4 client in an Exchange Server 2007 environment
• "Computer account for 'SMTPSVC/' not found in Active Directory." error message in an Exchange Server 2007 environment
• The sent time in an email message body is incorrect when you reply or forward the email message by using an EWS application in an Exchange Server 2007 environment
• The returned URL is incorrect when you use the WebDAV "X-MS-ENUMATTS" method to enumerate an attachment in an Exchange Server 2007 environment
• The EdgeTransport.exe process crashes if the pipeline tracing feature is enabled together with a redirect transport rule in an Exchange Server 2007 environment
• The W3WP.exe process may crash when a WebDAV client connects to an Exchange Server 2007 server
• DTMF inputs are not accepted by a UM auto attendant while the greeting message is playing in an Exchange Server 2007 environment
• "Object has been corrupted and it is in an inconsistent state" warning message when you view a transport rule on an Exchange Server 2007 SP3 server
• "554 5.6.0" NDR message when you send an email message to an Exchange Server 2007 mailbox from a Macintosh computer
• The Microsoft.Exchange.Search.ExSearch.exe process consumes 100% CPU after you apply Update Rollup 1 or Update Rollup 2 for Exchange Server 2007 SP3 on the passive node of a SCC
• The "Test-Replicationhealth" cmdlet fails on a stretched cluster in an Exchange Server 2007 SP3 CCR environment
• The "ScheduleOnlyDuringWorkHours" property of a resource mailbox may not function as expected in an Exchange Server 2007 environment
• The "Require SSL" setting is unexpectedly unselected on the RPC virtual directory on an Exchange Server 2007 server
• Event ID 1160 is logged and the Microsoft Exchange Information Store service randomly stops responding on an Exchange Server 2007 server
• Description of Update Rollup 3 for Exchange Server 2007 Service Pack 3
• An item is removed unexpectedly from a public folder in an Exchange Server 2007 environment
• A meeting response status from an external attendee may be incorrect if you send the meeting request from an Exchange Server 2007 environment
• A meeting request may not open correctly after you disable the "Display sender's name on messages" option in the EMC of Exchange Server 2007 SP2 or SP3
• A calendar synchronization times out when you use ActiveSync to synchronize with an Exchange Server 2007 mailbox on a mobile device
• "MAPI_E_NETWORK_ERROR (0x80040115)" error message when a client application connects to an Exchange Server 2010 server or an Exchange Server 2007 server
• "The message could not be opened" error message when an Exchange Server 2007 user tries to open or accept a meeting request

5. MSExchange.org News of the Month

• The MS Exchange Team Blog Getting a Serious Facelift and Moving to TechNet
• New Coexistence with Hosted E-Mail section in the core Exchange 2010 documentation
• Released: Update Rollup 3 for Exchange 2010 SP1 and Exchange 2007 SP3
• Outlook and OWA Version and Features
• Update Rollup 9 for Hosted Messaging and Collaboration 4.5 Released
• First Windows Phone 7 Update Hit My Device
• My latest TechNet Magazine Exchange Queue & A Column Published
  

6. Ask Henrik Walther a question

QUESTION:

We are an Exchange 2010 shop hosting more than 100 domains. Because of this we have configured the autodiscover service with redirection method mentioned in the Exchange 2007 Autodiscover white paper, so users can specify their own domain when connecting to their mailbox using Outlook Anywhere and Exchange ActiveSync. This works as expected. However, there’s one annoyance that I hope you can help me with.

When users connect to their mailbox using Outlook Anywhere they get the following warning asking them if they want to allow a redirection to occur. Although they have the option of setting a checkmark in the dialog box first time the see it, I was wondering if it can be suppressed?

ANSWER:

As long as the client is running Outlook 2007 SP2 (or later) or Outlook 2010 RTM (or later), you can suppress the warning using a registry key on the client.

For specific steps required when using Outlook 2010, see: You cannot suppress the Autodiscover redirect warning in Outlook 2007.

For Outlook 2010, see: How to suppress the AutoDiscover redirect warning in Outlook 2010.

TechGenix Sites