chrislott Posted May 18, 2005 Share Posted May 18, 2005 My ISP offers greylisting for coping with spam. The way they describe this, it sounds like their SMTP server simply responds to every first delivery attempt with some kind of "too busy, try again later" status, and accepts every second attempt. This presumes that spammers ignore the return codes, and valid email comes from store-and-forward systems that will keep trying. It seems like a great idea but I bet there's a catch, and I don't just mean waiting the extra 10 min or whatever the delay is. Any one have comments or experience with this? If it's a solid approach, has Spamcop ever tried it? Please advise, thanks. Link to comment Share on other sites More sharing options...
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