Okay I ran the perform monitor at a clients that is using IMF. I used the info from http://www.techgalaxy.net/blog/20041203214445.html to set it up and got the results listed below: MSExchange Intelligent Message Filter % UCE of Messages Scanned in the previous 30 minutes - 83 % UCE out of Total Messages Scanned - 73.583 Messages Scanned for UCE/sec - 0.000 Total Messages Assigned an SCL Rating of 0 - 236 Total Messages Assigned an SCL Rating of 1 - 51 Total Messages Assigned an SCL Rating of 2 - 21 Total Messages Assigned an SCL Rating of 3 - 22 Total Messages Assigned an SCL Rating of 4 - 29 Total Messages Assigned an SCL Rating of 5 - 104 Total Messages Assigned an SCL Rating of 6 - 64 Total Messages Assigned an SCL Rating of 7 - 359 Total Messages Assigned an SCL Rating of 8 - 719 Total Messages Assigned an SCL Rating of 9 - 157 Total Messages Scanned for UCE - 1765 Total UCE Messages Acted Upon - 1298 UCE Messages Acted Upon/sec - 0.000 Regards, Andrew