Noel Jones schrieb:
Robert Schetterer wrote:
[...]
You can reject such clients with a check_reverse_client_hostname access table. Make sure this is after permit_mynetworks so you don't reject the "real" localhost.http://www.postfix.org/postconf.5.html#check_reverse_client_hostname_access # some table localhost REJECT you're not localhost
In our Postfix Version 2.5.4 we use check_helo_access with the same map. Together with smtpd_helo_required = yes this works too.
Ilja Beeskow