Hello, We're an ISP and use exim as a smarthost/relay for our customers.
We are trying to cut down the amount of spam we relay. We currently run messages through clamd with extra signatures from Sanesecurity (Thanks Steve), and stop customers mail servers relaying bounces through us to cut down backscatter. I don't really want to run all mail through spamassassin as that will be expensive. However, is there a way to ratelimit or deny hosts based on how many messages they've sent that have been rejected/deferred by the recipients MX? Eg, if we've tried to relay messages for a host, and 100 in the past hour have been denied or deferred by the recipients MX, then we can block the sender from sending more. (as well as log it and contact the customer) Thanks. -- Andrew -- ## List details at http://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/
