Article ID: 834511 - View products that this article applies to.
Consider the following scenario. You use either Microsoft Outlook Express 6.0 or Microsoft Office Outlook 2003 to reply to an e-mail message that was received by using a POP3 e-mail account. When you click Reply to reply to the POP3 e-mail message, the e-mail address or the display name of the person to whom you are replying is incorrect.
This problem may occur if all the following conditions are true:
To resolve this problem, use one of the following methods, depending on your situation.
Method 1: Install Microsoft Windows XP Service Pack 2 (SP2)For more information about how to obtain Windows XP SP2, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/322389/ )How to obtain the latest Windows XP service pack
Method 2: Install the MS04-018 cumulative security update for Outlook ExpressFor more information about the cumulative security update for Outlook Express, click the following article number to view the article in the Microsoft Knowledge Base:
823353After you install this cumulative security update, follow these steps to set the
(http://support.microsoft.com/kb/823353/ )MS04-018: Cumulative security update for Outlook Express
Q834511registry subkey and to enable the hotfix:
To work around this problem, do not use a comma or an extended character in a display name.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Outlook Express 6.0 and Outlook 2003 use the Inetcomm.dll file to parse message headers that are received by using a POP3 e-mail account. When the display name contains only a comma and does not contain an extended character, the display name for the From field is enclosed in quotation marks. When the display name contains both a comma and an extended character, the From field looks similar to the following example:
From: =?iso-8859-1?Q?Garaikoetxea_Mu=F1oa=2C_firstname_Mari_=28lastname_POP3=29?= <e-mail address>When Outlook Express parses the From field, it considers the comma as a separator if the string is not enclosed in quotation marks.
If you send a message when the conditions that are listed in the "Cause" section are true, more than one message may be sent. In this scenario, one message contains the correct and complete SMTP e-mail address. The other message contains an incorrect or incomplete SMTP e-mail address. If a recipient receives the message that contains an incorrect or incomplete SMTP e-mail address, the recipient cannot reply to the message.