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postusername Field

Exchange Server 2003

postusername Field

This content is no longer actively maintained.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 username used in conjunction with postpassword when authenticating with a Network News Transfer Protocol (NNTP) service over the network. The user principal name (UPN) used to authenticate when posting messages remotely using Microsoft Exchange.

Full Name


Named Constant





This field is only relevant if the http://schemas.microsoft.com/cdo/configuration/postusing field is set to cdoPostUsingPort (2) or cdoPostUsingExchange (3). For more information, see the CdoPostUsing Enum. If Microsoft Outlook Express is installed, the value from the default account is used.

When posting a message using Exchange, this value is the user's UPN. If the http://schemas.microsoft.com/cdo/configuration/mailboxurl property is not set, Collaboration Data Objects (CDO) uses this UPN to look up the Exchange server hosting the user's mailbox. When authenticating with Microsoft Active Directory, the UPN and postpassword value are used for credentials.


Microsoft Windows NT 4.0-compatible format

User principal name format

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