This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Delivery Failed from Other domains

Hello All,

Please everything was working fine, all emails were coming fine until I integrated the email with Sophos email Security. Now Some domains  sends email, they don't Get any feedback letting them know the email delivery failed but i see it in the sophos Log messages that message is accepted but Delivery failed. 

Please what could be the issue, Kindly help advise on how to resolve this.

Authentication-Results: mx-01-us-west-2.prod.hydra.sophos.com; spf=pass smtp.mailfrom=AAAA@XXX.com; dkim=pass header.d=XXX.com header.from=XXX.com
Received-SPF: pass receiver=mx-01-us-west-2.prod.hydra.sophos.com; client-ip=40.107.22.66; envelope-from=<AAA@XXX.com>; helo=EUR05-AM6-obe.outbound.protection.outlook.com;
X-Sophos-Processing-Start-Time: 1684923447612
X-Sophos-Product-Type: Gateway
X-Sophos-Email-ID: 4fa8bf6f4baa498f90e63fa9dcc00881
Received: from EUR05-AM6-obe.outbound.protection.outlook.com (mail-am6eur05on2066.outbound.protection.outlook.com [40.107.22.66]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx-01-us-west-2.prod.hydra.sophos.com (Postfix) with ESMTPS id 4QR6Yy6Cz6zTgCy for <BBB@ZZZ.com>; Wed, 24 May 2023 10:17:25 +0000 (UTC)
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=nBQmCHaGykZaTSvP3DDOExN+eWf++BLsICAtXm19rlxpuAowCoYfitoMLvnHOeFImVQne34juoCyZFwe7X1nQIyI+v9pMF3+YwTKH9Ou1cCAog3WCr63EvD/VLuvePHdHU8I6hmahV7cgBW9NiiVEYp4RisN1XTN1AQ6wnhzKmj1jTPhpCkhmQicVe5QI2qA7sUn8Rn4bn1ptr7PXpzsrum0MQkBT03D3bLgy8hsqIBlqqUjJhMK5W2z5DRZCb8vR0mVDhQwUbPlCl3SBtYbpyAQj+fvQrLW6zANXJ3Y/HMOUH/Z0WqDK5UdeEccjORLWI7eWX5JMYD6kUOAisjRkg==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=XQjPehz9cJelsUAmFHUIJIlX2R91VISxkwbmWE66ygI=; b=e5QEMsmZ8woKPIITOPZ8ghYPstYwan/MvVKsCvzNXX9cB/nXLLENxgAqGCggGPuEgyCgM32yjcpMXzGKuPq/J/6qrpLzKmgqsmMgJNt8OAb4veAFtC5gu0OoPWCkJB25DhbAXmye0o3Vc/xHkUKPUQ8mtoJ4iVzK2opHAdYP8lGP94qs5nZ/gT2DMVIpR5tVxlkefjOXuWw0LJnUqV/GLf1oVM9PgxgwJpeig6ZRBixmwZyOTfVflQQU6nzdR0auRqbXIjHpktmg8zb2Y+BAFfydx3IWAhm5/ERBGQ7MEckqsONbzfaAi1IlM9JlPsYHaFlo8g48guK85XxLwDLmnQ==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=XXX.com; dmarc=pass action=none header.from=XXX.com; dkim=pass header.d=XXX.com; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=XXX.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=XQjPehz9cJelsUAmFHUIJIlX2R91VISxkwbmWE66ygI=; b=LZ8KdZKIZrWoAoiTkY65RYY/NVutc8LsuE56ULBgCtDnuh8aF1RLPrKI2zpoXYFh2xAoCFyGORYSdv7/o6BMnuvUhm0rhaZ1JHVm81MaCdcXVm/EHKCRO0Z9Aya1G5PbZo6Wp4iBOYzMNs5Vyz2I1leYfa+nNGUNgQWMPMXkDW0=
Received: from DU0PR08MB7809.eurprd08.prod.outlook.com (2603:10a6:10:3b7::15) by PAVPR08MB8896.eurprd08.prod.outlook.com (2603:10a6:102:324::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6411.29; Wed, 24 May 2023 10:17:22 +0000
Received: from DU0PR08MB7809.eurprd08.prod.outlook.com ([fe80::838:b049:3af8:f5ad]) by DU0PR08MB7809.eurprd08.prod.outlook.com ([fe80::838:b049:3af8:f5ad%7]) with mapi id 15.20.6411.028; Wed, 24 May 2023 10:17:22 +0000



This thread was automatically locked due to age.