Your message to 1705599@mukilteo.wednet.edu couldn't be delivered.

A custom mail flow rule created by an admin at mukilteoschooldistrict.onmicrosoft.com has blocked your message.

This mailbox is not allowed to receive messages from external senders.

webmaster Office 365 mukilteo.wednet.edu Sender Action Required Blocked by mail flow rule

How to Fix It An email admin at mukilteoschooldistrict.onmicrosoft.com has created a custom mail flow rule that blocks messages that meet certain conditions, and it appears that your message has met one or more of those conditions. Check the text above for a custom message from the email admin that may help explain why your message was blocked and how you might be able to fix it. For example, removing prohibited words from the message or sending the message from a different email account may be sufficient to deliver your message. If you've tried and you're still not able to fix the problem, consider contacting the email admin at mukilteoschooldistrict.onmicrosoft.com to discuss what to do. While they're unlikely to remove or relax the rule, if you have a legitimate need to deliver your message they may offer guidance for how to do so.

More Info for Email Admins

Status code: 550 5.7.1_ETR This error occurs because an email admin at mukilteoschooldistrict.onmicrosoft.com has created a custom mail flow rule that has blocked the sender's message. In some cases, the sender can change the message so it no longer violates the rule. However, depending on the rule's conditions, it's possible that the only way to deliver the message is to change the rule itself, and only an email admin at mukilteoschooldistrict.onmicrosoft.com can do that. Although it's possible the rule is unintentionally flawed or it's stricter than the admin intended, it may be working exactly as they want it to.

Original Message Details

Created Date: 3/2/2021 10:31:17 PM Sender Address: webmaster@inkscape.org Recipient Address: 1705599@mukilteo.wednet.edu Subject: Your registration on inkscape.org

Error Details

Reported error: 550 5.7.1 TRANSPORT.RULES.RejectMessage; the message was rejected by organization policy DSN generated by: BYAPR13MB4295.namprd13.prod.outlook.com

Original Message Headers

Received: from DM5PR2201CA0009.namprd22.prod.outlook.com (2603:10b6:4:14::19)
 by BYAPR13MB4295.namprd13.prod.outlook.com (2603:10b6:a03:97::31) with
 Microsoft SMTP Server (version=TLS1_2,
 cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3912.9; Tue, 2 Mar
 2021 22:31:20 +0000
Received: from DM6NAM04FT047.eop-NAM04.prod.protection.outlook.com
 (2603:10b6:4:14:cafe::12) by DM5PR2201CA0009.outlook.office365.com
 (2603:10b6:4:14::19) with Microsoft SMTP Server (version=TLS1_2,
 cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3890.23 via Frontend
 Transport; Tue, 2 Mar 2021 22:31:20 +0000
Authentication-Results: spf=pass (sender IP is 140.211.166.138)
 smtp.mailfrom=inkscape.org; mukilteo.wednet.edu; dkim=none (message not
 signed) header.d=none;mukilteo.wednet.edu; dmarc=bestguesspass action=none
 header.from=inkscape.org;
Received-SPF: Pass (protection.outlook.com: domain of inkscape.org designates
 140.211.166.138 as permitted sender) receiver=protection.outlook.com;
 client-ip=140.211.166.138; helo=smtp1.osuosl.org;
Received: from smtp1.osuosl.org (140.211.166.138) by
 DM6NAM04FT047.mail.protection.outlook.com (10.13.159.34) with Microsoft SMTP
 Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
 15.20.3890.20 via Frontend Transport; Tue, 2 Mar 2021 22:31:19 +0000
Received: from localhost (localhost [127.0.0.1])
	by smtp1.osuosl.org (Postfix) with ESMTP id C152183759
	for <1705599@mukilteo.wednet.edu>; Tue,  2 Mar 2021 22:31:18 +0000 (UTC)
X-Virus-Scanned: amavisd-new at osuosl.org
Received: from smtp1.osuosl.org ([127.0.0.1])
	by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id vPSwz86ugiDc for <1705599@mukilteo.wednet.edu>;
	Tue,  2 Mar 2021 22:31:18 +0000 (UTC)
Received: from inkscape1.osuosl.org (inkscape1.osuosl.org [140.211.9.79])
	by smtp1.osuosl.org (Postfix) with ESMTP id 25BD683653
	for <1705599@mukilteo.wednet.edu>; Tue,  2 Mar 2021 22:31:18 +0000 (UTC)
Received: from inkscape1.osuosl.org (localhost [IPv6:::1])
	by inkscape1.osuosl.org (Postfix) with ESMTP id DAB7EEAB1
	for <1705599@mukilteo.wednet.edu>; Tue,  2 Mar 2021 22:31:17 +0000 (UTC)
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: Your registration on inkscape.org
From: webmaster@inkscape.org
To: 1705599@mukilteo.wednet.edu
Date: Tue, 02 Mar 2021 22:31:17 -0000
Message-ID: <20210302223117.17431.93955@inkscape1.osuosl.org>
Return-Path: webmaster@inkscape.org
X-EOPAttributedMessage: 0
X-EOPTenantAttributedMessage: a2d4d43f-15d1-49d4-8d87-3e7d7dc64397:0
X-MS-PublicTrafficType: Email
X-MS-Office365-Filtering-Correlation-Id: deafb11f-4277-4704-1a82-08d8ddcae6ab
X-MS-TrafficTypeDiagnostic: BYAPR13MB4295:
X-MS-Exchange-AtpMessageProperties: SA|SL