On Tue, 23 Jan 2024, Wietse Venema via Postfix-users wrote:

Barbara M. via Postfix-users:
Jan 23 00:11:34 auth postfix/smtpd[188544]: NOQUEUE: reject: RCPT from
wp-host1.xyz.com[4.3.2.1]: 554 5.7.1 <f...@dom-redir.it>: Relay
access denied; from=<r...@wp-host1.xyz.com> to=<f...@dom-redir.it>
proto=ESMTP helo=<wp-host1.xyz.com>

It this is this an INTERNAL DESTINATION, add it to main.cf:relay_domains.

   relay_domains = dom-redir.it, ...

If this is an EXTERNAL DESTINATION, authorize the client with mynetworks
or with SASL authentication.

   smtpd_recipient_restrictions =
        permit_mynetworks, permit_sasl_authenticated, ...

Sorry for my poor english. Hope I can be understood.

As I told in my post, I want that if anyone send mail to *@dom-redir.it, his SMTP server, find this server as MX for the dom-redir.it domain (DNS already configured obviously), this server receive the mail and relay it to the real destination server (that can be considered EXTERNAL). In this situation I can't use client authorization (that is already configured and working, with the usuals mynetworks and SASL authentication).

Just for test I have tried to add the domain in main.cf as:

relay_domains = dom-redir.it, ...

but as I wrote, I already have tried before with the usual:

relay_domains = hash:/etc/postfix/relay_domains

where in /etc/postfix/relay_domains I have:

dom-redir.it    OK
 . . .


That is the same.
But still have the "Relay access denied" answer.
Tried to compare with other similar servers (not same OS or Postfix version), but I can't find what I am doing wrong. I suppose it is a parameter somewhere.

Thanks, B






































































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