log4net RollingFileAppender输出大量日志，maxsizerollbackup没有任何效果

A service I have is suddenly spewing tons of log files and is not limiting the number of files written. The logs are (sort of) named MyService.2015-01-08.1, MyService.2015-01-08.2, MyService.2015-01-08.3, etc, all the way until 218 currently. I'd like to limit this to 10 per day instead of it being unlimited like right now. Here is what the log config was previously: A service I have is suddenly spewing tons of lo