Realtime Blacklist Filter Recommendation

REDDOXX recommends the following Realtime Blacklist filter beside the already default list bl.spamcop.net.
Please Keep in mind, that the RBL Filter is not maintained by Reddoxx and only selected from a list of common RBL Filters.
 
ix.dnsbl.manitu.net
 
bb.barracudacentral.org
 
If however, still spam attacks are not filtered by the above lists, check http://mxtoolbox.com for RBL Filter lists, that would block the sender and add the RBL Filter to the Reddoxx Appliance.
 
More Information can be found in the administration manual