| t Windows XP, Windows Server 2003, and beyond do not include or support the use of CDONTS. Thus, any applications that send messages using CDONTS must be migrated to use CDOSYS. It provides the same functionality and is just as easy to use.
In addition to serving as a replacement, CDOSYS introduces some new functionality that was not previously available in CDONTS. Some of the functionality includes:
Ability to post messages to newsgroups
Control of MIME body structure for messages
Reply and forward functionality
Transport event sink to allow responding to events
The System.Web.Mail namespace contains classes that interact with CDOSYS to construct and send the message(s).
Using IIS and SMTP Service
In order for CDOSYS to send e-mail or other messages from your application, you need to enlist the services of IIS with the SMTP Service installed. Both are available in Windows 2000/XP through the Control Panel -> Add/Remove Programs -> Add/Remove Windows Components option. The job of the STMP Service is to accept and deliver the messages, based on the configuration. The service can attempt to deliver the messages directly, or it can utilize a smart host to deliver the message instead. When a smart host is enlisted, all messages are forwarded to it for delivery. You need to have IIS and the SMTP service installed and configured.
The SMTP Service uses a directory structure to contain messages prior to delivery. The default directory is C:\Inetpub\mailroot. This folder contains a number of subdirectories such as Queue, Drop, and Badmail. If you are unable to configure your instance of the SMTP Service for delivery, you can find the message in a *.EML file in the C:\Inetpub\mailroot\Queue directory. This technique 上一页 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] ... 下一页 >> |
