I do some port connection limits with iptables and xt_recent, but still
have some spam as well, a limit in user accounts would be useful.
Em 22/08/2019 12:32, Jeff Koch escreveu:
Hi List
Sometimes a user's email credentials get hijacked and before we know
it 100,000 spams go out. This doesn't happen very often but when it
does it's a mess. Our mailserver gets blocked by major ISP and it
takes weeks to get the blocks lifted. So I was thinking - is there any
way to rate limit email accounts? For example, limit users to sending
no faster than one email every few seconds. There used to be a patch
for the old Bill's Qmail Toaster called 'spam throttle' that could do
this.
Regards, Jeff
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