Trying to defeat such an attack with pure resource power is going to be a losing battle. There must be a mechanism in place to stop the attack, not just overcome it.
yes, but the POP resource seems to be, like the SMTP resource in response to dictionary attacks, too small in the first place, too quickly exhausted.
One can fix the SMTP exhaustion by letting IMGate handle the inbound, but there's no equivalent for the POP service, so reactive blocking by a firewall is the way to go.
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