Delivery has failed to these recipients or groups:
Kevin Chandra (kchandra@ust.hk)
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: TYWP286MB2266.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 SG2PR04CA0180.apcprd04.prod.outlook.com (2603:1096:4:14::18) by TYWP286MB2266.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:13f::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7002.28; Mon, 20 Nov 2023 22:12:06 +0000 Received: from SG1PEPF000082E4.apcprd02.prod.outlook.com (2603:1096:4:14:cafe::5b) by SG2PR04CA0180.outlook.office365.com (2603:1096:4:14::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7002.27 via Frontend Transport; Mon, 20 Nov 2023 22:12:06 +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 SG1PEPF000082E4.mail.protection.outlook.com (10.167.240.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7025.12 via Frontend Transport; Mon, 20 Nov 2023 22:12:04 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=3qzxzbyhaymt3i6nxxr5zjq5kjllp5wj; d=druid.dk; t=1700518322; h=Date:From:To:Message-ID:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding; bh=uEHsc5/FkG3vlQZu4i7Z1gz9XS5YFf/JsiqKD5/16To=; b=F1KQUTJHg4i9hUqOeWhi4uVcb1FTewMMUs5LTMAaB2lis9uNC87DfOj+qZJ2FiEA eLlBSsPtgyKetMVyr8wF+cgLHPys6zcgj/wFRAKE4iZbS9A1QsIPoz56gvP/Hh2J/xX G0O/KLM4ooOMQEGf+fj7ihWjjysvSPSb16YSNlFw= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=224i4yxa5dv7c2xz3womw6peuasteono; d=amazonses.com; t=1700518322; h=Date:From:To:Message-ID:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Feedback-ID; bh=uEHsc5/FkG3vlQZu4i7Z1gz9XS5YFf/JsiqKD5/16To=; b=kLPijWWEeVVCiGCRDGpDdMdQU0apx2Xs74AHvGOzocvJpfzuNOiYIRPw67qGobTy wvnKW6wiksbWUKZU+pvAjyGtVD+CZb/lywH0+Of0JwazfxLZU5GP1s0GAIil3T1p4dL SuMZXTwBR/1ZkLeaverXwvWh8UuIvjdOICG4fF2A= Date: Mon, 20 Nov 2023 22:12:02 +0000 From: DRUID24 <druid@druid.dk> To: Kevin Chandra <kchandra@ust.hk> Message-ID: <0100018beeca6084-97731f12-4b46-4e9f-b2a6-d4eab37a6739-000000@email.amazonses.com> Subject: DRUID24: First Call for Papers 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: 2023.11.20-54.240.8.70 Return-Path: 0100018beeca6084-97731f12-4b46-4e9f-b2a6-d4eab37a6739-000000@amazonses.com X-EOPAttributedMessage: 0 X-EOPTenantAttributedMessage: c917f3e2-9322-4926-9bb3-daca730413ca:0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SG1PEPF000082E4:EE_|TYWP286MB2266:EE_ X-MS-Office365-Filtering-Correlation-Id: 4c6eeddd-0b9d-4bde-8e0b-08dbea15bafa