Author: Marc Sherman Date: To: exim-users Subject: Re: [exim] Whitelisting for rDNS-check
user therion wrote: > #Deny Hosts without rDNS/only mark message,deny later
> via exim.filter-file!
>
> warn message = Broken Reverse DNS - no host name
> found for IP address $sender_host_address
You've been told not to do that already, but I don't think I saw you
respond; don't do this. It will cause you to collateral-spam faked
senders. Deny in the ACL instead.