Delivery has failed to these recipients or groups:

Kevin Chandra (kchandra@ust.hk)
Your message couldn't be delivered to the recipient because you don't have permission to send to it.

Ask the recipient's email admin to add you to the accept list for the recipient.

For more information, see DSN 5.7.129 Errors in Exchange Online and Office 365.









Diagnostic information for administrators:

Generating server: TYWP286MB3270.JPNP286.PROD.OUTLOOK.COM

kchandra@ust.hk
Remote server returned '550 5.7.129 RESOLVER.RST.RestrictedToRecipientsPermission; not authorized to send to recipient because the sender isn't on the recipient's list of senders to accept mail from'

Original message headers:

Received: from SG2PR02CA0020.apcprd02.prod.outlook.com (2603:1096:3:17::32) by
 TYWP286MB3270.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:2d3::11) with Microsoft
 SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
 15.20.7292.31; Fri, 16 Feb 2024 09:19:57 +0000
Received: from SG1PEPF000082E8.apcprd02.prod.outlook.com
 (2603:1096:3:17:cafe::29) by SG2PR02CA0020.outlook.office365.com
 (2603:1096:3:17::32) with Microsoft SMTP Server (version=TLS1_2,
 cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7292.26 via Frontend
 Transport; Fri, 16 Feb 2024 09:19:57 +0000
Authentication-Results: spf=pass (sender IP is 54.240.8.70)
 smtp.mailfrom=amazonses.com; dkim=pass (signature was verified)
 header.d=druid.dk;dmarc=bestguesspass action=none header.from=druid.dk;
Received-SPF: Pass (protection.outlook.com: domain of amazonses.com designates
 54.240.8.70 as permitted sender) receiver=protection.outlook.com;
 client-ip=54.240.8.70; helo=a8-70.smtp-out.amazonses.com; pr=C
Received: from a8-70.smtp-out.amazonses.com (54.240.8.70) by
 SG1PEPF000082E8.mail.protection.outlook.com (10.167.240.11) with Microsoft
 SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
 15.20.7292.25 via Frontend Transport; Fri, 16 Feb 2024 09:19:56 +0000
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple;
	s=3qzxzbyhaymt3i6nxxr5zjq5kjllp5wj; d=druid.dk; t=1708075193;
	h=Date:From:To:Message-ID:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding;
	bh=m/suzEONuPq7fuaih85TRRM6gaUTTQtRzxVaFO/236g=;
	b=vDqGFU8dbsF+IUJ703KAEi6ba8donm+reExKGckbw8DbuvJHmKtSXBEyFVnzTBt8
	4PdACmDl+sN0mIyfpzZVvHKmWSOmhON+uhikpQStiFn4ARR0CJIhJo15QMvIktGQzA5
	hLAeKblwWT1TaN7qxJpqEXW7yqrO3teziUtM5J+M=
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple;
	s=224i4yxa5dv7c2xz3womw6peuasteono; d=amazonses.com; t=1708075193;
	h=Date:From:To:Message-ID:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Feedback-ID;
	bh=m/suzEONuPq7fuaih85TRRM6gaUTTQtRzxVaFO/236g=;
	b=VorMTfYIhMajG3WR/nVXk/p5hVZ85YmpAZh67TzNQU1nYS0RNlPMHNnReUDeREQe
	X+EfuWUcGeZ9LhtDjUc33VHmxVOX7mgXBAfjbHbicjleEhdZYJz3RwKUAK9AW2TYIPs
	zEccr3DMvxsaPi9A2PGqQN8rDtULBsAynRAU64ic=
Date: Fri, 16 Feb 2024 09:19:53 +0000
From: DRUID24 <druid@druid.dk>
To: Kevin  Chandra <kchandra@ust.hk>
Message-ID: <0100018db1371338-0cfeb9c3-f6ae-4601-9d53-3a1873ea6f44-000000@email.amazonses.com>
Subject: Invitation to become a reviewer for DRUID24
MIME-Version: 1.0
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Feedback-ID: 1.us-east-1.13mSgHqxbnUUx50/TZSkdjEk6laramo5BkOedBdTQl8=:AmazonSES
X-SES-Outgoing: 2024.02.16-54.240.8.70
Return-Path:
	0100018db1371338-0cfeb9c3-f6ae-4601-9d53-3a1873ea6f44-000000@amazonses.com
X-EOPAttributedMessage: 0
X-EOPTenantAttributedMessage: c917f3e2-9322-4926-9bb3-daca730413ca:0
X-MS-PublicTrafficType: Email
X-MS-TrafficTypeDiagnostic: SG1PEPF000082E8:EE_|TYWP286MB3270:EE_
X-MS-Office365-Filtering-Correlation-Id: 9ed3dcc4-5263-42d5-2358-08dc2ed0716f