Ian P. Christian wrote: > On 9 April 2010 22:36, W B Hacker <[email protected]> wrote: >> # CONNECT_3B If a PTR RR was not found, we don't get this far. >> # If a PTR exists, test to see if it is of any *USE* >> # >> deny >> message = Sender on $sender_address not a mail server. \ >> DNS PTR RR fails to match to valid host name.\ >> # logwrite = C3B rDNS lookup for $sender_host_address $sender_address \ >> # $sender_host_name >> condition = ${if eq{$interface_port}{25}} >> !hosts = : +relay_from_hosts >> !verify = reverse_host_lookup >> log_message = C3B rDNS fail for $sender_host_address $sender_address \ >> $sender_host_name > > > I've found that blockign on !verify = reverse_host_lookup causes far > too much load on support with people calling up asking why they didn't > get emails. > > In an ideal world, I'd love to turn it on, but in my experience - you > really can't get away with it. >
We're way off-topic now, but having a valid PTR RR and proper DNS entries may be the single most important RFC requirement to insist on w/r zapping zombies. And the RFC in question isn't even smtp-specific. YMMV, but ' get away with it' is what the OTHER guy was doing. With your acquiescence... Bill -- ## 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/
