Re: blacklists
On Wednesday 08 December 2004 20:16, Craig Sanders <cas@taz.net.au> wrote:
> > Craig, why do you think it's undesirable to do so?
>
> because i dont want the extra retry traffic. i want spammers to take FOAD
> as an answer, and i dont want to welcome them with a pleasant "please try
> again later" message. i think it is a sin to be polite or pleasant to a
> spammer :)
I agree that we don't want to be nice to spammers. But there is also the
issue of being nice in the case of false-positives.
The extra traffic shouldn't be that great (the message body and headers are
not being transmitted). When a legit user accidentally gets into a
black-list their request to get the black-list adjusted can often be
processed within the time that their mail server is re-trying the message.
> even on my little home system, at the end of an adsl line, i reject nearly
> 10,000 spams per day (and climbing all the time). i would expect that to
> at least double or triple if i 4xx-ed them rather than 5xx, depending on
> how much came from open relays or spamhaus rather than dynamic/DUL.
30,000 rejections per day is only one every three seconds. Not a huge load.
I am not trying to convince you to change your system (I'm not entirely
convinced to change mine at this time).
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