DNS blacklists

["Tupker, Mike" <mtupker () MTMERCY EDU>]

Hi,

I was just curious what other campus' are using in terms of DNS blacklist when it comes to email? They are very handy 
but recently a few of them have been the source of some complaints from our users. Currently we are using:

Rbl-xbl.Spamhaus
psbl.surriel.com
cbl.abuseat.org
bl.spamcop.net
dnsbl.njabl.org
Barracudacentral - by default in our barracuda device

I know we are probably using more lists than is necessary, but I'm sure you all know how cranky people can get if they 
find a single spam message in their inbox.

Mike Tupker
Systems Administrator
Mount Mercy College