On Mon, 2014-11-03 at 02:24 +0100, Bertrand Caplet wrote:

I do think so too, I tried this way and I can ban the domain in from header. But not in reverse DNS via IP I guess. I searched for it in google but can't find. Maybe I could do this with iptables/ufw I'll see

Bonjour Bertrand,

Try .....................

acl_check_connection:

deny message = [SNA03] Rejected. Sender's IP address has no Host name. \ Ask your technical experts to rectify the problem. condition = ${lookup dnsdb{ptr=$sender_host_address} {0}{1} }

deny message = [SNA04] Rejected. Sender's Host has No Reverse DNS. \ Ask your technical experts to rectify the problem. condition = ${if and{{def:sender_host_address}{!def:sender_host_name}} \ {yes}{no}}

deny message = [SNA08] Host name not genuine mail server. Complaints to: \ xxxxx@gmail.com condition = ${if match{$sender_host_name} \ {^.*[0-9]+[\-|\.|_][0-9]+[\-|\.|_][0-9]+[\-|\.|_]*.*}} !hosts = EXDIR/hosts.a8 delay = 5s

deny message = [SNA13] Your mail server's host name, $sender_host_name, \ resembles a home Internet connection. \ Complaints to: xxxxx@gmail.com condition = ${if match{${lc:$sender_host_name}} \ {(broadband|client|customer|dsl|dyn|dynamic|home|static|user)(\d|\.|\-|ip)} \ {1}{} } !condition = ${if match{${lc:$sender_host_name}} \ {smarthost|pndsl\.co\.uk} {1}{} }