Another example - approx 1,000 customers sharing a web server, e-mail being sent from their website forms using for example CDONTS. And all 1,000 of them are on the same Imail server.
or relaying from another machines as web server to imail as outboung gateway.
It is possible that within a short amount of time may generate a bunch of erroneous messages that will hit the Imail server.A bunch? but, you only need ONE MSG with >512-bytes in any header, and you've shutdown all outgoing mail from those 1000 web customers.
Because of this we are actually not using the "auto-deny possible hack attempts" feature on our Imail servers.It's broken completely, everybody should shut if off, and fixed by Ipswitch, and then be changed to off by default.
Len
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