Folks were complaining about a Watcher 2.4 alert which had been successfully logged, so when I went to the history I found it had triggered but the email action failed:
"reason": "MessagingException[failed to send email with subject [Email Subject] via account [work]]; nested: SMTPSendFailedException[[EOF]]; "
This problem seems uncommon, but I can't find a setting which would attempt resend or send a warning about failed emails. Where can I find deeper information about the error? Is there a way to resend this? Do I need an alert to look for recent failed alert actions? Would updating to 5.x gain me any of that?