On Tue, 25 Oct 2011 06:28:41 -0700 (PDT) John Hardin wrote: > Seconded. MTAs typically have efficient facilities for white- or > black-listing specific email addresses. Use the capabilities of your > MTA and glue layer to completely bypass SA for those addresses since > you _know_ you want to receive mail from them.
The downside to that is that it's not going through Bayes, so there's no auto-learning or atime updates. So when someone with a whitelisted address delegates, moves-on, or uses a different account, Bayes may be less well prepared than it would otherwise be. I suspect that in some cases MTA whitelisting may actually lead to a worse FP rate than doing nothing - particularly where BAYES_00 has been given a more substantial score.
