> hard to get more efficient than rejecting after RCPT TO:
Except that we're getting over a million of these rejectiosn per day, and at least once a day they are so great that the server starts to get unresponsive for up to ten or fifteen minutes.
Then you need to move your defense off Imail, block port 25, and set up a defensive MX box.
Well, we've got a 3ghz machine running our mail server now, and even it seems to labor when things get ugly.
yep, many IMGate users add IMGate so they can get back their (often very expensive) Imail box from the spammers.
I've seen an IMGate box reject 70K/hour for days on end (1.5 million/day) with no impact on legit traffic flow.
Len
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