Configuring the Mail Service
As an authorized administrator, use the SMTP Configuration Web page to:
NOTE: Default TCP Port: The default TCP port number for SMTP is 25. Ensure that you configure the port specified by your local mail server.
Message Creation and Delivery
A user-defined event or condition triggers the MSTR block to create a message. Each message uses one of three user-defined headers. Each message sent from the controller can contain text and variable information (with a maximum of 238 bytes).
The project selects the appropriate header. Each header contains:
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sender name
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list of recipients
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subject
The text and variable information can be defined and updated by an authorized administrator using an embedded Web page (SMTP Configuration page). Define mail headers to indicate different levels of importance. For example:
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Header 1 could be "Urgent problem reported by PLC 10"
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Header 2 could be "NOTIFICATION from substation 10"
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Header 3 could be "INFO message from water system"
Listing different recipients in each of the three headers ensures that the right information quickly flows to the right recipients. The project adds pertinent information such as the specific device, process, or location. This pertinent information is added to the body of the mail message. Then the complete message is sent to an electronic mail server for distribution to recipients. These recipients could be engineers, managers, or process owners.
Security (Authentication)
An optional login (system ID) and password can be used to authenticate the connection to the SMTP mail server. The SMTP-supported authentication method is LOGIN.
The SMTP Diagnostic Web page displays the status of the service. Diagnostic information is also available for remote management using the SNMP network management standard.
