MORE INFORMATION
The dynamic-link libraries (DLLs) for CDO (1.1, 1.2, 1.21) and CDO Rendering (1.1, 1.2) are MAPI client object libraries. As such, they require MAPI and service providers (for
example, the same service providers as with Microsoft Exchange Server).
Collaboration Data Objects for NTS (CDONTS) is a Simple Mail Transfer
Protocol (SMTP) based Messaging offering, which is part of the overall CDO
(1.1, 1.2) Library, but is not MAPI dependent.
Collaboration Data objects for Windows 2000 (CDOSYS), is a quantum leap in SMTP Messaging over CDONTS. CDOSYS provides for rich content through extensive MIME support.
The names of these files vary depending on the version of CDO as noted
in the following table:
Version Messaging Lib Rendering Lib CDO for NTS CDO for Win2K
(MSG) (RND) (NTS) (SYS)
-----------------------------------------------------------------------
v1.1 Olemsg32.dll Amhtml.dll Cdonts.dll n/a
v1.2 Cdo.dll Cdohtml.dll Cdonts.dll n/a
v1.21 Cdo.dll Cdohtml.dll n/a n/a
v6.0 n/a n/a n/a Cdosys.dll
These files can be obtained through the following product installations:
v1.1 v1.2 v1.21 v6.0
MSG/RND/NTS | MSG/RND/NTS | MSG/RND/NTS | SYS
--------------------------------|--------------|-------------|--------
Outlook 8.00 | N / N / N | N / N / N | N / N / N | N
Exchg 5.0 Client | Y / N / N | N / N / N | N / N / N | N
Outlook 8.01-8.03 | Y / N / N | N / N / N | N / N / N | N
Exchg 5.0 Srv | Y / Y / Y | N / N / N | N / N / N | N
IIS 4.0 | N / N / Y | N / N / N | N / N / N | N
Outlook 98 | N / N / N | N / N / N | Y / N / N | N
Exchg 5.5 Srv | N / N / N | Y / Y / Y | N / N / N | N
Exchg 5.5 Srv SP1 | N / N / N | N / Y / Y | Y / N / N | N
Exchg 5.5 Srv SP2 | N / N / N | N / Y / Y | Y / N / N | N
Outlook 2000 | N / N / N | N / N / N | Y / N / N | N
Outlook 2002 | N / N / N | N / N / N | Y / N / N | N
Outlook 2003 | N / N / N | N / N / N | Y / N / N | N
Windows 2000 | N / N / N | N / N / N | N / N / N | Y
Exchg 2000 | N / N / N | N / N / N | Y / Y / N | N
Exchg 2000 SP1 | N / N / N | N / N / N | Y / Y / N | N
Exchg 2000 SP2 | N / N / N | N / N / N | Y / Y / N | N
Exchg 2000 SP3 | N / N / N | N / N / N | Y / Y / N | N
Windows 2003 | N / N / N | N / N / N | N / N / N | Y
Exchg 2003 | N / N / N | N / N / N | Y / N / N | N
Note CDO 1.21 was previously available for download in a redistributable format. However, the redistributable version of CDO is no longer available. CDO must be installed by another product, such as Microsoft Outlook or Microsoft Exchange.
When using Exchange to install CDO 1.21, you can use one of the following methods to install:
- Install Exchange Server (Exchange 5.5, 2000, and 2003)
- Install only the Exchange Administrator (or Exchange System Manager) utility (Exchange 5.5, 2000, and 2003)
- Install Outlook Web Access (OWA - Exchange 5.5 only)
After the installation, you may have to manually register Cdo.dll by using Regsrv32 (that is,
regsrv32.exe full path and file name of CDO.DLL). For Exchange System Manager installations, you must copy Cdo.dll from the installation media to the %Program Files%/Exchsrvr/bin directory before you register Cdo.dll by using Regsrv32.exe.
By default, Outlook installations do not include the CDO 1.2x component. When you view the options for Office or Outlook setup, CDO is listed under the options for Outlook.