On Fri, 18 Apr 2008, Ian Eiloart wrote: | I hope you mean that if the reverse DNS entry for the sending IP address | ends in wellsfargo.com then you'll whitelist the address.
Yep - I'm pretty sure this is what Marc P means. Need to check both: - The rDNS entry for the sending IP matches *.wellsfargo.com - The forward DNS entry for the resulting hostname machines the sending IP. The latter check is needed to prevent a spammer who operates their own rDNS from spoofing the hostname. The two checks together are sometimes known as "forward-confirmed rDNS" (FCrDNS). Exim does this as a matter of course. BTW, wouldn't a "No Blacklist List" be more simply described as a "white list" ? -- ## 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/
