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Topic: 554 5.0.0 Message bounced by administrator (delivery attempts: 0)>'

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.3.1 MARIADB edition.
- Deployed with iRedMail Easy or the downloadable installer? downloadable installer.
- Linux/BSD distribution name and version: Ubuntu 20
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): NginX
- Manage mail accounts with iRedAdmin-Pro?  Pro
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====


Diagnostische gegevens voor beheerders:

Bronserver: SUB.SERVER.LOCAL
user@domain.ext
Remote Server returned '554 5.0.0 < #5.0.0 smtp; 5.x.0 - Message bounced by administrator (delivery attempts: 0)>'
Oorspronkelijke berichtkoppen:

I'm encountering the following issue. there's one specific domain, i can't seem to receive mails from. I instantly get a the message above.
I can't find it back in any logs?! (any hints??)
and i can't seem to find a cure to whitelist this domain.

Can anyone help me out?

Thanks in advance.

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Re: 554 5.0.0 Message bounced by administrator (delivery attempts: 0)>'

Looks like your server (either domain, sender, or server IP) is blacklisted by that server.
BTW, is "SUB.SERVER.LOCAL" your server hostname? If yes, it may be rejected due to invalid FQDN hostname, ".local" is not a valid top-level domain name.

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Re: 554 5.0.0 Message bounced by administrator (delivery attempts: 0)>'

ZhangHuangbin wrote:

Looks like your server (either domain, sender, or server IP) is blacklisted by that server.
BTW, is "SUB.SERVER.LOCAL" your server hostname? If yes, it may be rejected due to invalid FQDN hostname, ".local" is not a valid top-level domain name.

It's the responding party. My mailserver is receiving every other mail, from any domain, except this one.
How can i whitelist it, through CLI ?

I checked this manual :
https://docs.iredmail.org/manage.iredapd.html

And i've added the domains.
Do you know where i can find any logs, regarding this?
It's not in the /var/log/mail/maillog
nor /var/log/syslog

As always, thanks Zhang

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Re: 554 5.0.0 Message bounced by administrator (delivery attempts: 0)>'

I'm confused. The error message ("Remote Server returned '554 5.0.0 < #5.0.0 smtp; 5.x.0 - Message bounced by administrator (delivery attempts: 0)>'") is not produced by Postfix on iRedMail, i don't know why you got this, hence no idea how to "whitelist" it.

Better show me related Postfix log lines.

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