Messages remain in an outbound queue until a non-delivery report is generated when you send e-mail to a remote domain
When you send e-mail messages to certain external domains, they may remain in an outbound queue on the Microsoft Exchange Server 2003 or Microsoft Exchange 2000 Server computer until a non-delivery report (NDR) is generated.
Configure the XEXCH50 Registry sub-key or configure the SMTP Connector.
Thank for your articles,Solution Information
The open group certification certification has released. OG0-9AB and OG0-081 is the exam codes in the opent group!