When a mail program tries to connect to a Microsoft Exchange Server 2007 server by using Secure Sockets Layer (SSL) over Simple Mail Transfer Protocol (SMTP) port 587, the connection cannot be completed.

This problem occurs if one of the following conditions is true:

• You are running Windows Mail on a computer that is running Windows Vista.
• You are running Outlook Express on a computer that is running Microsoft Windows XP with Service Pack 2.
• You are running Outlook Express on a computer that is running Microsoft Windows Server 2003 with Service Pack 1.

Note By default, Exchange 2007 uses port 587 for SSL connections.

This problem occurs because Outlook Express and Windows Mail use port 25 for SSL connections. By default, Exchange 2007 uses port 587 for SSL connections.

To resolve this problem, apply the hotfix to the operating system on which you are running Outlook Express or Windows Mail.

Update for Windows XP (KB933612)

http://www.microsoft.com/downloads/details.aspx?FamilyId=6E550476-68F5-493C-A40E-504EEF6001A2 (http://www.microsoft.com/downloads/details.aspx?FamilyId=6E550476-68F5-493C-A40E-504EEF6001A2)

Update for Windows XP x64 Edition (KB933612)

http://www.microsoft.com/downloads/details.aspx?FamilyId=7DEA7920-C1BE-486E-90D3-33A4ECA6F501 (http://www.microsoft.com/downloads/details.aspx?FamilyId=7DEA7920-C1BE-486E-90D3-33A4ECA6F501)

Update for Windows Server 203 (KB933612)

http://www.microsoft.com/downloads/details.aspx?FamilyId=0E3D20C4-B5F5-4284-99D2-53283E86ECE2 (http://www.microsoft.com/downloads/details.aspx?FamilyId=0E3D20C4-B5F5-4284-99D2-53283E86ECE2)

Update for Windows Server 2003 for Itanium-based Systems (KB933612)

http://www.microsoft.com/downloads/details.aspx?FamilyId=4ECE6408-2348-486C-8018-DB500054BAC3 (http://www.microsoft.com/downloads/details.aspx?FamilyId=4ECE6408-2348-486C-8018-DB500054BAC3)

Update for Windows Server 2003 x64 Edition (KB933612)

http://www.microsoft.com/downloads/details.aspx?FamilyId=433FC423-E63E-4E97-A69D-126489A24018 (http://www.microsoft.com/downloads/details.aspx?FamilyId=433FC423-E63E-4E97-A69D-126489A24018)

Update for Windows Vista (KB933612)

http://www.microsoft.com/downloads/details.aspx?FamilyId=A3757DBB-EE4D-45E7-85EB-AB2CD5935944 (http://www.microsoft.com/downloads/details.aspx?FamilyId=A3757DBB-EE4D-45E7-85EB-AB2CD5935944)

Update for Windows Vista for x64-based Systems (KB933612)

http://www.microsoft.com/downloads/details.aspx?FamilyId=80545881-2385-478A-92E6-6A2790FB1B8C (http://www.microsoft.com/downloads/details.aspx?FamilyId=80545881-2385-478A-92E6-6A2790FB1B8C)

Windows Vista hotfix information

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 item in Control Panel.

Windows Vista, 32-bit versions

Windows Vista, 64-bit versions

Windows XP hotfix information

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 item in Control Panel.

Windows Server 2003 hotfix information

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 item in Control Panel.

Windows Server 2003, 32-bit versions

Windows Server 2003, x64-based versions

Windows Server 2003, Itanium-based versions

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about the terms that are used to describe software updates, click the following article number to view the article in the Microsoft Knowledge Base: