This section provides an overview of the Simple Mail Transfer Protocol (SMTP) MTM.
Provides APIs for sending of Internet emails.
The Messaging Middleware architecture defines a framework in which modules (MTMs) can be implemented that provide support for particular messaging protocols. A client MTM provides the API for application engines to use the protocol. The SMTP API provides the client MTM API, plus supporting classes for SMTP, see Email Overview.
The API has four key concepts: SMTP Client MTM, SMTP service settings, progress information, and email message entry information.
SMTP Client MTM
The SMTP Client MTM provides an SMTP-specific operation, to enable automatic sending of waiting messages either immediately or whenever a dial-up connection is made. Some generic messaging operations, such as receiving messages, are not supported by the MTM.
The SMTP Client MTM class is CSmtpClientMtm. Most of the functions in this
class are implementations of the virtual functions defined by the CBaseMtm base class. The SMTP Client MTM implements the
standard Client MTM APIs including the functions required to allow
clients of SendAs to create emails.
Commits cached changes to the current message context to the storage controlled by the Message Server.
Loads the cache with the message data for the current context
Stores and loads the current service settings from the object's cache into the central repository for the current entry.
Creates a reply or forward message to the current message context.
Searches the specified message parts for the plain text.
SMTP service settings
Settings for SMTP connections
are stored in the message store (CMsvStore) for the
SMTP service entry. Settings include server address and email address.
Encapsulation of service settings is provided by the CImSmtpSettings class.
Progress information
The progress
information can be obtained for messaging operations. For SMTP operations,
progress information includes such things as connection state and
number of messages sent. Progress information is provided by TSmtpProgress.
Email message entry information
Protocol-specific data for a message is stored in fields in its index entry. A class TMsvEmailEntry is provided to read these fields for e-mail protocols (including SMTP).