Exchange Server 2003 does not include the "In-reply-to" header field when you use Outlook or Outlook Web Access to reply to an e-mail message that originated from outside the organization (908027)

SYMPTOMS

Microsoft Exchange Server 2003 does not add the In-reply-to header field when you reply to an e-mail message that originated from outside the organization. This problem occurs when you send the reply by using Microsoft Outlook or Microsoft Outlook Web Access. Additionally, this problem occurs when one of the following conditions is true:

Outlook is configured in MAPI mode.
Outlook Web Access is used without the Secure/Multipurpose Internet Mail Extensions (S/MIME) control.

Note To use S/MIME, you must configure Exchange Server 2003 after you install the S/MIME control on the client computer.

Note The In-reply-to header field typically contains the message ID of the e-mail message to which you reply. The In-reply-to header field is used by some messaging programs to identify the reply as part of an e-mail thread.

RESOLUTION

Hotfix information

A 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:

http://support.microsoft.com/contactus/?ws=support

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.

Prerequisites

You must install Microsoft Exchange Server Service Pack 2 (SP2) or Microsoft Exchange Server 2003 Service Pack 1 (SP1) before you apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply the hotfix. However, the Microsoft Exchange Information Store service and all dependent services will be restarted.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English 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 tool in Control Panel.

Microsoft Exchange Server 2003 SP2

File name	File version	File size	Date	Time	Platform	SP requirement
Store.exe	6.5.7650.9	5,243,904	08-Dec-2005	04:28	x86	SP2

Microsoft Exchange Server 2003 SP1

File name	File version	File size	Date	Time	Platform	SP requirement
Mdbmsg.dll	6.5.7233.54	3,270,144	27-Oct-2005	01:04	x86	SP1
Redir.asp	Not applicable	3,304	04-Jun-2005	01:56	Not applicable	SP1
Store.exe	6.5.7233.54	5,200,896	27-Oct-2005	01:38	x86	SP1

MORE INFORMATION

Exchange Server 2003 correctly adds the In-reply-to header field in some client configurations. The following table summarizes the circumstances under which the In-reply-to header field is included.

Program	Configuration	In-reply-to header
Outlook	MAPI	No
Outlook	SMTP	Yes
Outlook Web Access	without S/MIME	No
Outlook Web Access	with S/MIME	Yes

For more 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