On Sat, Nov 17, 2012 at 8:21 AM, Always Learning <[email protected]> wrote: > >> Simple ratelimits are better than nothing but constrain honest users >> while still allowing spam to trickle through, >> your relays still end up in blacklists. >> Each relay needs automatic detection and blocking of compromised accounts >> (stolen passwords). I implemented Andrew Hearn's idea >> to check not rate of messages or all recipients, but >> rate of attempts to send to nonexistent recipient email addresses. > > Brilliant. Very useful.
I concur. I do a lot of work to detect and block compromised accounts, but this is one signal that I had ignored. I'm going to incorporate this (concept and implementation in large part) into my systems. The goal is that sender reputation can only go up :-) Thank you very much Lena. ...Todd -- The total budget at all receivers for solving senders' problems is $0. If you want them to accept your mail and manage it the way you want, send it the way the spec says to. --John Levine -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
