Forum topic

I sent individual emails to our FA23 enrolled students and of the ones that sent about 25 bounced back with the following error.

Diagnostic information for administrators:

Generating server: mail.globalnaz.org
 

Remote server returned '554 5.4.0 < #4.7.0 X-Postfix; delivery temporarily suspended: host mx.globalnaz.org[192.168.2.219] refused to talk to me: 421 4.7.0 mx.globalnaz.org Error: too many connections from 192.168.2.100>'
 

Original message headers:

Return-Path: <Choward@nts.edu>
Received: from mail.globalnaz.org (localhost [127.0.0.1])
            by mail.globalnaz.org (Postfix) with ESMTPS id 3F3B88E96B3A
            for <susan.beverly@nts.edu>; Tue,  1 Aug 2023 13:05:00 +0000 (UTC)
Received: from localhost (localhost [127.0.0.1])
            by mail.globalnaz.org (Postfix) with ESMTP id 3ADF98E96B40
            for <susan.beverly@nts.edu>; Tue,  1 Aug 2023 13:05:00 +0000 (UTC)
X-Virus-Scanned: amavisd-new at globalnaz.org
Received: from mail.globalnaz.org ([127.0.0.1])
            by localhost (mail.globalnaz.org [127.0.0.1]) (amavisd-new, port 10026)
            with ESMTP id Xi0UBjx5mYV5 for <susan.beverly@nts.edu>;
            Tue,  1 Aug 2023 13:05:00 +0000 (UTC)
Received: from my.nts.edu (unknown [192.168.2.246])
            by mail.globalnaz.org (Postfix) with ESMTPSA id 2FCD28E96B3A
            for <susan.beverly@nts.edu>; Tue,  1 Aug 2023 13:05:00 +0000 (UTC)
Date: Tue, 1 Aug 2023 08:05:00 -0500 (CDT)
From: Choward@nts.edu
To: susan.beverly@nts.edu
Message-ID: <1166716245.89.1690895100167.JavaMail.tomcat@gnecsis-nts>
Subject: FA23 Bill
MIME-Version: 1.0
Content-Type: text/plain

Correction I am getting additional mail Delivery system delayed emails.