configuring email appending for WARN and above

[Curtis Garman]

Can someone tell if it is possible to configure the smtp email appender to
send email for WARN level message and above? I seem to only be able to get
ERROR level stuff to come back in email form.

log4j.appender.email=org.apache.log4j.net.SMTPAppender
log4j.appender.email.SMTPHost=smtp.server
log4j.appender.email.SMTPDebug=false
log4j.appender.email.bufferSize=1
log4j.appender.email.from=f...@domain.com
log4j.appender.email.to...@domain.com
log4j.appender.email.subject=subject
log4j.appender.email.threshold=WARN
log4j.appender.email.layout=org.apache.log4j.PatternLayout
log4j.appender.email.layout.ConversionPattern=[%p]
%d{ISO8601}%n%n%c:%L%n%n%m%n

-- 
Curtis