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Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows Registry
When you try to use the Always-up-to-date Notifications feature in Microsoft Exchange Server 2003, the feature may not function with your mobile device.
This problem occurs because some wireless carriers block specially-formatted Simple Mail Transfer Protocol (SMTP) messages that contain a blank From field. Some carriers block all messages that have blank From fields because some junk e-mail messages contain blank From fields.
Service pack information
To resolve this problem, obtain the latest service pack for Exchange Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
836993 How to obtain the latest service packs for Exchange Server 2003
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
No prerequisites are required.
You must restart your computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name---------------------------------------------------23-Jan-2004 01:39 6.5.6980.65 82,944 Miscat.dll 11-Jul-2003 21:39 188.8.131.52 6,656 Spmsg.dll
To activate this hotfix, follow these steps. Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
Click Start, and then click Run.
In the Open box, type regedit, and then click OK.
Locate and then click the following subkey:
If there is an OMA key, go directly to step 7.
To create an OMA key, point to New on the Edit menu, and then click Key.
On the Edit menu, point to New, and then click String Value.
Type SMTP821FromAddress, and then press ENTER.
Right-click SMTP821FromAddress, and then click Modify.
Type your e-mail address in the Value data box, and then click OK.
Make sure that the e-mail address is less than 64 characters in length. Use the same format as the following sample e-mail address: firstname.lastname@example.org.
On the File menu, click Exit to quit Registry Editor.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Exchange Server 2003 Service Pack 2.
Always-up-to-date Notifications is a new feature in Exchange 2003 that permits an always up-to-date user experience with Pocket PC. This feature is only available on devices that have Microsoft Windows Mobile 2003 operating system. By default, Always-up-to-date Notifications are installed with Exchange 2003. When an event is generated in a user's Exchange account, a notification is sent to the user's device. The device performs synchronization in the background so that the most current information is available when the user next checks the device.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
817903 New naming schema for Exchange Server software update packages