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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