Am 30.06.2016 um 08:40 schrieb John McMurray: > Below is an example. Is there anything I can do to prevent my users from > getting these? I've searched as much as I can but I don't seem to see anything > useful for this type of case. I might just be looking in the wrong places > (search terms).
Well there are a few techniques like "bounce address tag validation" (BATV). In our setup we just use rspamd (with just 1-2 rule tweaks) and it works really well - all this "bounce-type" spam just gets filtered so I never bothered to add more specific rules. About 75% of our total spam volumes comes from dialup accounts or mail hosts without valid reverse dns. All of them are caught by DNSBLs or just the "NO HOSTNAME" rule. Either way I think this is not so much exim related so you might want to check out other anti-spam software (or maybe just a few additional rules) which can be used with Exim. Felix -- ## 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/
