Al reenviar correos en Office365 se obtiene este error: 550 5.7.520 Access denied, Your organization does not allow external forwarding. Please contact your administrator for further assistance. AS(7555)
Creemos se debe a que Microsoft ha activado sin avisar una directiva de seguridad.
https://www.youtube.com/watch?v=-hCEzC5E5Jc&t=11s
Lo activamos en: https://protection.office.com/antispam
Directiva de correo de salida, Editar directiva, Habilitar el reenvío
Resent-From: <xxxxxxxxxxxxxxxxx>
Received: from AS8PR04CA0045.eurprd04.prod.outlook.com (2603:10a6:20b:312::20)
by AM6PR07MB6037.eurprd07.prod.outlook.com (2603:10a6:20b:97::24) with
Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3763.2; Fri, 8 Jan
2021 12:34:32 +0000
Received: from VE1EUR03FT003.eop-EUR03.prod.protection.outlook.com
(2603:10a6:20b:312:cafe::63) by AS8PR04CA0045.outlook.office365.com
(2603:10a6:20b:312::20) with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3742.6 via Frontend
Transport; Fri, 8 Jan 2021 12:34:32 +0000
Authentication-Results: spf=pass (sender IP is 209.85.221.196)
smtp.mailfrom=soluciones.si; xx; dkim=pass (signature was
verified) header.d=soluciones-si.20150623.gappssmtp.com;xxxx.es;
dmarc=bestguesspass action=none header.from=soluciones.si;
Received-SPF: Pass (protection.outlook.com: domain of soluciones.si designates
209.85.221.196 as permitted sender) receiver=protection.outlook.com;
client-ip=209.85.221.196; helo=mail-vk1-f196.google.com;
Received: from mail-vk1-f196.google.com (209.85.221.196) by
