We just upgraded our work connection to a full T-1. Whoever had our main IP before us appears to have gotten themselves (and now us) put on dsbl.org's blacklist. The way they provide to get the IP off the list is that they send a confirmation email to abuse@[ip address]. I tried having them send it, but it didn't work. I have no idea how to test if our Exchange 2000 can receive mail like this, nor do I know how t configure it to if it is neccesary. Can anyone help me?