The performance of the server deteriorates over time after you enable Sender ID Filtering in Exchange Server 2003 Service Pack 2 (918283)
The information in this article applies to:
- Microsoft Exchange Server 2003 Service Pack 2
SYMPTOMSAfter you enable Sender ID Filtering on a server that is running Microsoft Exchange Server 2003 Service Pack 2 (SP2), the performance of the Exchange server deteriorates over time. If you run the following command at a command prompt, you can notice that there are many connections to the SMTP port that are in a state of CLOSE_WAIT: Additionally, you experience the following symptoms: - Client computers cannot make any new SMTP connections to the Exchange server.
- You cannot restart the World Wide Web Publishing Service. You have to kill and then restart the inetinfo.exe process by running the following command:
Note To enable Sender ID Filtering, you must configure options on the General tab of the Message Delivery object properties dialog box in Exchange System Manager. Additionally, you must click to select the Apply Sender ID Filter check box under the IP address area of the Default SMTP Virtual Server properties dialog box. CAUSEThis problem occurs because of an accumulation of process threads that are blocked in filtering operations. The blocked process threads wait indefinitely to complete validating the sender as part of the Sender ID validation process.RESOLUTIONHotfix informationA supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Exchange Server 2003 service pack that contains this hotfix. To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site: Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. PrerequisitesYou must install Exchange Server 2003 Service Pack 2 (SP2) before you apply the hotfix.
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
Restart requirementYou do not have to restart the computer after you apply the hotfix. Hotfix replacement informationThis hotfix does not replace any other hotfixes. File information
The global version of this hotfix has the file attributes (or later file attributes) 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 item in Control Panel. |
| Msgfilter.dll | 6.5.7651.19 | 205,824 | 22-Apr-2006 | 03:45 | x86 |
WORKAROUNDTo work around this problem, you can free blocked process threads in the filtering process. To do this, restart Internet Information Services (IIS). You may have to restart IIS one time a month. If you cannot restart the World Wide Web Publishing Service from the Services snap-in, you may have to kill the inetinfo.exe process and then restart it. To do this, run the following command at a command prompt: STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
| Modification Type: | Minor | Last Reviewed: | 7/26/2006 |
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| Keywords: | kbQFE kbfix kbBug kbhotfixserver kbpubtypekc KB918283 kbAudITPRO |
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