Snel.com - Yavuz Ayd?n:
> I think Postfix checks the parent domain or POstfix just connects back
> to the connecting mailserver to do the check (which would pass).
No, that would be immensely stupid, especially if the email address
is not remote. Postfix probes follow the same path that ordinary
Dnia 12.11.2019 o godz. 10:20:01 Snel.com - Yavuz Aydın pisze:
> reject_unverified_sender. It looks like our Postfix server accepts mail
> which has a sender www-data@hostname while smtp.antispamcloud.com reject
> the same mail for a specific hostname. That specific hostname (a FQDN) is
> behind
Hi all,
We have a setup where we have a relay server which in turn sends all
received mails through to another relay server (from a known anti-spam
vendor). We use Postfix 3.4.5 on Debian 10.
The important parts about our setup:
smtpd_sender_restrictions = reject_unknown_sender_domain
