[logback-user] smtpappender including INFO messages

[Chris Cheshire]

I have my logger configured (theoretically) to only send emails when
error events are received, which seems to be working, except that the
content of the email not only includes the ERROR event, but any INFO
events leading up to that event. I don't want *anything* but the
logged ERROR event in the email. How do I remove all of this?

Chris