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Topic: Server Rejecting all incoming mail

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.5.0
- Deployed with iRedMail Easy or the downloadable installer? Download installer
- Linux/BSD distribution name and version: Redhat 8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- Web server (Apache or Nginx):NGINX
- Manage mail accounts with iRedAdmin-Pro? Yes
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====
Jul 13 10:09:34 mail postfix/smtpd[4454]: connect from mail-pf1-f171.google.com[209.85.210.171]
Jul 13 10:09:34 mail postfix/smtpd[4454]: discarding EHLO keywords: CHUNKING
Jul 13 10:09:34 mail postfix/smtpd[4454]: Anonymous TLS connection established from mail-pf1-f171.google.com[209.85.210.171]: TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256
Jul 13 10:09:34 mail postfix/smtpd[4454]: discarding EHLO keywords: CHUNKING
Jul 13 10:09:34 mail postfix/smtpd[4454]: NOQUEUE: reject: RCPT from mail-pf1-f171.google.com[209.85.210.171]: 554 5.7.1 <ocpistol@gmail.com>: Sender address rejected: Access denied; from=<ocpistol@gmail.com> to=<greg@gfhinc.net> proto=ESMTP helo=<mail-pf1-f171.google.com>


Its weird nothing changed and happened during the night.

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Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Stable release is out.

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Re: Server Rejecting all incoming mail

Solved with a support ticket and hours ...

Inbound traffic was forwarded to port 2525 (which is configured to be used by end users to send out emails), and the "smtpd_sender_restrictions" causes the rejection.