On 9/7/2023 2:31 PM, Patrice Go via Postfix-users wrote:
Hi,

In fact i ve a server www.domain.org <http://www.domain.org> which send emails (from PHP www-data) to an external email [email protected] <mailto:[email protected]> by the mean of a mail relay mail.domain.org <http://mail.domain.org>. the message from www is transmitted to mail, but i don't understand what happen, the message is rejected with a relay access denied.
i have this log (from mail.domain.org <http://mail.domain.org>):
NOQUEUE: reject: RCPT from unknown[xxx.22.xx.1x]: 554 5.7.1 <[email protected] <mailto:[email protected]>>: Relay access denied; from=<[email protected] <mailto:[email protected]>> to=<[email protected] <mailto:[email protected]>> proto=ESMTP helo=<www.domain.org <http://www.domain.org>>

you can see the postconf -n :
https://paste.debian.net/1291288/ <https://paste.debian.net/1291288/>

i tested without check_sender_access, but the result is the same.

is there something i am missing ?



To allow relay, the client must either be listed in mynetworks, or authenticate via SASL or an approved TLS certificate.

Please see
http://www.postfix.org/BASIC_CONFIGURATION_README.html#relay_from

and also possibly
http://www.postfix.org/SASL_README.html
http://www.postfix.org/TLS_README.html



  -- Noel Jones
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