Bruce Dubbs wrote: > The systems is supposed to just give a temporary failure.
And it does -- after the RCPT TO, it gives a "450 4.7.1 <rcpt-addr>: Recipient address rejected: greylisted, see <url>" type response. So at least the postgrey people were smart enough to do that. ;-) > Many times spammers use cut down mailers and don't retry. Yeah, but how hard would it be to add retrying to a spammer's botnet software? I'm going to predict that within the next year, if greylisting is implemented widely (and I've been hearing about it a lot, but I don't know how many servers actually do it), the spammers will just start retrying once if they get a temporary-error response. But hey, for the moment, it might work. Probably worth a try at least. > We are only giving a temp failure message for 5 minutes. Yes, but my ISP's mailer doesn't retry for at least 10 minutes. The message I sent whose date was 9:06 AM EST didn't actually get delivered to me until 9:18 AM EST; the intervening time was the server delay. Not that that's bad, mind you, but I don't think it's specified either (the delay could have been a couple hours).
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