I read an interesting excerpt on the Zimbra site about commercial whitelists.
http://wiki.zimbra.com/wiki/Improving_Anti-spam_system#Externally-Maintained_Whitelists It occurred to me that a sender that is paying their way into my inbox is almost certainly sending me junk mail. A little research in my inbox and it turns out to be right on the money. All stuff that I didn't want. It seems so obvious, if they try to buy their way into my inbox they probably belong in my spam folder. I took the reduced negative scores recommended by Zimbra, inverted the values and stored these in my local.cf. # commercial buy-in whitelists (most likely junk) score RCVD_IN_BSP_TRUSTED 0.500 score RCVD_IN_BSP_OTHER 0.500 score RCVD_IN_BONDEDSENDER 0.500 score HABEAS_ACCREDITED_COI 0 0.5 0 0.5 score HABEAS_ACCREDITED_SOI 0 0.25 0 0.25 score HABEAS_CHECKED 0 0.1 0 0.1 score RCVD_IN_IADB_VOUCHED 0 0.2 0 0.2 score RCVD_IN_IADB_DOPTIN 0 0.4 0 0.4 score RCVD_IN_IADB_ML_DOPTIN 0 0.6 0 0.6 score RCVD_IN_DNSWL_LOW 0 0.1 0 0.1 score RCVD_IN_DNSWL_MED 0 0.4 0 0.4 score RCVD_IN_DNSWL_HI 0 0.8 0 0.8 --Dave
