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Tom, et al, To be exactly clear, its really connections that are hitting the greylist box, more so than messages. The number of connections varies day by day of course. Just now I looked at a several log files and I'd say the average is between 2,500,000 and 3,000,000 connection attempts per day. For today, there are approximately 193,000 entries marked GREY. That's a somewhat fair statistic of how many people are seeing the 451 message. I cannot tell you matter-of-factly how many of those will become trusted hosts. I cannot tell you how many folks will fail the process either. Your last question is answered by those graphs provided, but I agree it is difficult to tell. You'd have to add together estimates over a period of time. It seems like we had some specific statistics on that somewhere else, but I cannot remember where right now, sorry. ./brm Tom Rockwell wrote: > Knowing the fraction of emails/spam rejected by the greylisting seems > useful for assessing the value of greylisting. Could you add the > following numbers? > > - number of messages hitting the greylist box per day > - number of messages bounced by the greylist box with 451 message > - number of messages marked as spam by spamassassin