This content is no longer actively maintained. It is provided as is, for anyone who may still be using these technologies, with no warranties or claims of accuracy with regard to the most recent product version or service release. The CdoProtocolsAuthentication enumeration is used to set the smtpauthenticate Field and nntpauthenticate Field in a Configuration CoClass object. Using this enumeration, you specify what authentication mechanism (if any) is used to perform authentication with a SMTP or Network News Transfer Protocol (NNTP) service when sending or posting messages over the network. Sending or posting messages over the network using the TCP/IP and SMTP/ NNTP/ is controlled using the sendusing Field and postusing Field.
Microsoft CDO for Exchange 2000 Library
DLL Implemented In
Name Value Description
Perform no authentication.
Use the basic (clear text) authentication mechanism.
Use the NTLM authentication mechanism.