Very handy postfix feature..
Mal
On 8/04/2018 6:33 AM, Wietse Venema wrote:
>
> I have "warn_if_reject reject_unknown_reverse_client_hostname" to
> test the waters, and I don't feel an urge to make that a hard reject.
Daniele Nicolodi:
> Hello,
>
> I have been using
>
> smtpd_relay_restrictions =
> ...
> reject_unknown_reverse_client_hostname
All features like this can block legitimate email. There is no
guarantee that someone won't break a good configuration, especially
when MAIL, DNS, and FIREWALL are
Hello,
I have been using
smtpd_relay_restrictions =
...
reject_unknown_reverse_client_hostname
warn_if_reject reject_unknown_client_hostname
...
for a long while in my configuration, where the warn_if_reject is there
because I thought that the more strict check could have blocked some
