Undelivered Mail Returned to Sender

Undelivered Mail Returned to Sender

This is the mail system at host gcp-prodpci.sabre.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<someone2@domain.ph>: host mx.zoho.com[136.143.191.44] said: 554
5.2.3 MailPolicy violation Error delivering to mailboxes (in reply to end
of DATA command)
Reporting-MTA: dns; gcp-prodpci.sabre.com
X-Postfix-Queue-ID: 3725E41CDC5
X-Postfix-Sender: rfc822; someone@domain.ph
Arrival-Date: Sat, 18 Feb 2023 02:49:18 +0000 (UTC)

Final-Recipient: rfc822; someone2@domain.ph
Original-Recipient: rfc822;someone2@domain.ph
Action: failed
Status: 5.2.3
Remote-MTA: dns; mx.zoho.com
Diagnostic-Code: smtp; 554 5.2.3 MailPolicy violation Error delivering to
mailboxes

Return-Path: <email>
Received: from hp2nvsvrem-0006 (unknown [10.30.166.21])
    by gcp-prodpci.sabre.com (Postfix) with ESMTP id 3725E41CDC5
    for <email>; Sat, 18 Feb 2023 02:49:18 +0000 (UTC)
DKIM-Filter: OpenDKIM Filter v2.11.0 gcp-prodpci.sabre.com 3725E41CDC5
MIME-Version: 1.0
From: "email2" <email1>
To: email2
Date: 18 Feb 2023 02:49:18 +0000
Subject: SynXis Res Cancelled (85538EE000202 85538EE000262X) (CANCELLATION)
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Message-Id: <20230218024918.3725E41CDC5@gcp-prodpci.sabre.com>