Josip Almasi wrote:
Well it works allright:)
Trying to think of problems - it may make problems to MTA that opens a
new connection for each msg. But of course there's no such MTA's
around;) But in such a case this method is equivalent to greylisting.
Glad to hear it!
Mucking about with iptables always brings me out in a cold sweat... one
slip and you can be locked out of a remote server :-)
Thanks for the modified script... I might try it myself if I get a DDoS.
I'm not sure if it would be effective though if a spambot stays
connected while doing a dictionary attack or while it tries to relay
several hundred emails once it has cracked an account. For that, James
itself would have to keep count of the number of commands executed and
force a disconnect after some threshold is reached.
You seem to be suggesting that the same IP address is connecting a lot
of times. If I were a spambot writer I would be trying to get as many
messages relayed as possible and re-connecting each time I tested a
password or sent a message would get in the way of that.
David Legg
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