Resolution
Microsoft Windows Server 2003 does not install Collaboration Data Objects (CDO) for NTS (CDONTS). Therefore, applications using CDONTS do not work on Windows Server 2003-based computers. Windows Server 2003 provides improved alternatives to CDONTS.
To get CDONTS to work on a Windows Server 2003-based computer, please do the following:
1. Download the attached CDONTS.ZIP file (you can also get the CDONTS.DLL component from the installation CD of Windows 2000). Once downloaded, unzip CDONTS.DLL and put its contents in the appropriate folder.
For 32-bit systems:
%systemroot%\system32 folder (by default C:\Windows\system32)
For 64-bit systems:
%windir%\syswow64 (by default C:\Windows\syswow64)
2. Register the CDONTS.DLL component in the server using the appropriate command.
For 32-bit systems:
regsvr32 "%systemroot%\system32\cdonts.dll"
For example:
C:\WINDOWS\system32>regsvr32.exe cdonts.dll
For 64-bit systems:
regsvr32 "%systemroot%\syswow64\cdonts.dll"
For example:
C:\WINDOWS\syswow64>regsvr32.exe cdonts.dll
3. Once the CDONTS.DLL component is registered, you should check if your SMTP service is running.
Go to Administrative tools, IIS, and Expand your local machine. If the SMTP service is listed, this means that it is already installed. If not, you should install this service.
To install SMTP, do the following:
Go to Control Panel, Add/Remove Programs, Add/Remove Windows Components, Application Server, IIS, Select SMTP service, and Click "OK."
4. Change the port number for the SMTP service. The default port is 25. Use 25 only when no other SMTP service is running. If there is already another SMTP service running on the server, change the SMTP port of IIS (for example, to port 8025).
You can do this through the IIS management console: Go to Control Panel, IIS, expand "local computer," SMTP, Properties, General, click the "Advanced" button, then "Edit."
5. Set up the SMTP service. Most importantly, you need to set up a fully qualified domain name for the SMTP service: Go to Control Panel, IIS, expand "local computer," SMTP, Properties, Delivery, click the "Advanced" button, and set up Security service for SMTP.
It is necessary to give permissions to IIS_WPG standard IIS Worker Process Group. Go to Control Panel, IIS , expand "local computer," SMTP, Properties, Security, click the "Add" button, click the "Object types" button, select the "Groups" element, click "OK," enter "IIS_WPG" (without quotes) as the object name to add, and click "OK."
Additional configuration: Select Authentication and check Anonymous Access and Integrated Windows Authentication. Click "OK" and then click "CONNECTION." Set up the RELAY settings. Click the "DELIVERY" tab and then click "ADVANCED." Set up the MAX Count hop to the required value (we suggest setting it to at least 20).
6. Assign write permissions for the psacln group on the "inetpub\mailroot\pickup" directory.
Note that custom permissions will be lost during a Parallels Plesk Panel upgrade. To avoid losing custom permissions during an upgrade, use the instructions provided in the "Customizing Disk Security" chapter of the Parallels Plesk Panel advanced administration guide.
Additional information
For additional information, please refer to the following resource:http://support.microsoft.com/default.aspx?scid=kb;en-us;324649