On 11/15/2016 6:11 PM, Bill Cole <postfixlists-070...@billmail.scconsult.com> wrote: > Be aware that if you use reject_unknown_helo_hostname you will have a > steady stream of cases for which you will have to make special > exceptions. How steady that stream is depends more on your volume and > diversity of legitimate mail than on how heavily spammed you are.
What Bill is saying here is using reject_unknown_helo_hostname to outright reject clients will reject legitimate clients, so unless you have a good reason for doing so and know what you are doing and are prepared to handle issues like you are experiencing now, or don't do it.
