I hadn't thought of that. It sounds like a neat idea, and one that doesn't require a repugnant amount of processing.
hard to get more efficient than rejecting after RCPT TO:
How long would you grey list an address for rejections?
I'm using 5 minutes :)
If they try to pump more than half a dozen messages through?
greylisting is not per IP. Greylist items are the triplet of
ip + [EMAIL PROTECTED] + [EMAIL PROTECTED]
So an ip sending 15 msgs all with forged, different senders is 15 rejects.
This sounds like it might be the solution, but I'm curious as to how you do it.
google for greylist. afaik, Imail and Imail add-ons don't/can't do greylisting efficiently, if at all.
And you don't want to waste your mailbox server resources (and bandwidth) sucking in all that crap only to reject it. Accepting entire msgs bodies then rejecting has been silly for a long time. With current volumes, it's insane, even suicidal for some Imail servers that just can't keep up.
Len
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