List your trusted IP sources trusted network list. Go to Global Settings, Message Delivery, General tab and add your servers. . ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Andrew English Sent: Wednesday, May 17, 2006 2:46 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Re: Sender ID error I keep getting "Sender Id must be configured with a list of trusted mail servers before it can be enabled." in my application long. When I look at Sender ID in IMF I don't see a place were to put the IP address of my local SMTP server!? Regards, Andrew