What I would suggest you do, is configure it to take no action and then use the Performance Monitor counters to see what levels of UCE you are getting, this will then give you a good idea of what level to set the Gateway and Store to. Mark Fugatt Dedicated Supportability Engineer (Exchange) Microsoft Limited Desk: +44 (0)118 909 5630 Mobile: +44 (0)7966 858108 MSN IM: markfu@xxxxxxxxxxxxxxxxx Blog: http://blogs.technet.com/mfugatt Dedicated to proactively supporting Microsoft's enterprise Customers -----Original Message----- From: Andrew English [mailto:andrew@xxxxxxxxxxxxxxxxxxxxxx] Sent: 28 December 2005 12:50 To: [ExchangeList] Subject: [exchangelist] RE: IMF removal http://www.MSExchange.org/ LOL Your right IMF doesn't have an auto message feature; well it kind of does when you set it up to reject your spam. I am referring ExchangeList and ISAList having the auto message feature. I initially had it set to 2/2 which worked great keeping 99% of the spam away, however with time some people were getting "this email has been rejected..." emails when trying to contact me. So I tried it at 4/2, that's when I started noticing the mailing list issues with ExchangeList and ISAList reporting several emails had bounced back so my accounts were temporarily put on hold until I sent a message to the list manager saying unhold, so I moved it up to 6/4 and it only got worse... (gateway/store) Andrew