Backup / Resend

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It is possible that a SMTP or ODBC target is unavailable at times. EventSentry will therefore try to resend messages when the SMTP server or ODBC target is unavailable.

Backup SMTP Server

If you specified a backup (secondary) SMTP server in your SMTP target configuration then EventSentry will try to send an email through the backup server before it retries the primary server.

Subject and Variables

If you are using the $LOG variable for the email subject and a backup message was sent, the variable will be expanded to Various instead of containing the actual event log name. If a backup email message was sent then [BACKUP] will always be appended to the subject to indicate that this email could not be sent before.

Timeout

If a SMTP or ODBC target cannot be reached, then EventSentry will try again in 30 seconds. If it cannot log the messages again then the timeout interval will continuously double (60 seconds, 120 seconds ...) to a maximum of one hour. When one hour is reached, EventSentry will keep the timeout value of 60 minutes and try again every hour.

If one or more event log messages cannot be sent out then they will be collected in a pool for that particular target. In this case, a backup email message can contain events from multiple event log logs (e.g. Application and System). Regular emails always only contain messages of one event log, such as the System event log.