On 3/9/2017 2:58 PM, MRob wrote: > Hello, in Postfix v3.1 I'm having a hard time getting > reject_unknown_client_hostname to bounce test messages.
See the docs for what this rejects. http://www.postfix.org/postconf.5.html#reject_unknown_client_hostname Warning: this is a very strict test likely to reject legit mail. See also: FCrDNS > I set an external host's Postfix myhostname to be purposefully > incorrect, like nosuchhost.example.com and sent a message to the > test system. If I have reject_unknown_helo_hostname enabled, it will > reject such messages. But reject_unknown_client_hostname won't, I > don't understand why. Settings in postfix do not control the client hostname; the client hostname is set in DNS. -- Noel Jones
