Email log file

The email log file is a required field. Each email send attempt will open the log file, append a log entry and close the file.

Maintaining a log file places an additional burden on the user, and points to understand/remember include:

The log file can be stored anywhere in the workstation's file name space.
It is not multi-user "safe". Do not attempt to keep a single, common file (use the Email Archive List feature instead).
It is unencrypted text and can be read by anyone with access to it.
It is primarily for debug purposes, and can be discarded periodically.
However, a thorough administrator would periodically gather up all email log files from every workstation that sends mail, and archive them.
If the log file doesn't exist, because email has never been sent, or the file has been moved or delete, a new file will be created.

The log file is a formatted list of log entries, one per email send attempt, identified by a unique id, and containing:

The date and time of the attempt.
The tool or print command used and the options set for the command.
The result (i.e. "success" or "failure").
In the case of success, a "250 2.0.0 OK" return value with queue id is found in the .smtp_log (for tracing sent email).
In the case of failure, the error code and reason for failure are recorded.
If Email Setup Log SMTP is set to "yes", the entire SMTP chit-chat is recorded (for debugging).