Undeliverable notices for Microsoft Teams / O365 Groups

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Occasional Contributor

Many of our members, including myself, regularly get non deliverable reports when using groups/teams.

 

The use case is such: our people plan meetings using teams and invite an entire channel. After that we always get a message such as this:

 

Untitled.png

 

 

 

Your message to the Office 365 group RvB@jciaalst.be couldn't be delivered.

The group RvB isn't set up to receive messages from jeroen.huylebroeck@jciaalst.be.

jeroen.huylebroeck@j. . .

Office 365

RvB

Sender

 

Action Required

 

 

 

 

 

  

Sender not allowed

 

How to Fix It

Try one or more of the following:

·         If you're a member of the group, you might be registered with an email address other than jeroen.huylebroeck@jciaalst.be. Resend your message using the email address where you received a welcome message from the group.

·         Ask the group owner to add jeroen.huylebroeck@jciaalst.be as a group member. If you don't know who the group owner is, contact the organization's customer service department for assistance.

·         Ask the group owner to allow people outside their organization to send email to the group.

 
 


More Info for Email Admins

Status code: 550 5.7.193

The Office 365 group, RvB@jciaalst.be, is configured to reject messages sent to it from outside its organization -- unless the sender is a guest group member. jeroen.huylebroeck@jciaalst.be isn't part of the organization, and it isn't a guest group member.

If you're the group's email admin or owner, check if the sender is a member of the group, but is registered under a different email address. Alternatively, the group owner, or email admin, can add jeroen.huylebroeck@jciaalst.be as a guest member of the group.

Original Message Details

Created Date:

6/18/2020 11:41:44 AM

Sender Address:

jeroen.huylebroeck@jciaalst.be

Recipient Address:

RvB@jciaalst.be

Subject:

RvB Juli 2020


Error Details

Reported error:

550 5.7.193 UnifiedGroupAgent; Delivery failed because the sender isn't a group member or external senders aren't permitted to send to this group.

DSN generated by:

AM6PR0402MB3606.eurprd04.prod.outlook.com

 

Message Hops

HOP

TIME (UTC)

FROM

TO

WITH

RELAY TIME

1

6/18/2020
11:41:45 AM

HE1PR0401MB2460.eurprd04.prod.outlook.com

HE1PR0401MB2460.eurprd04.prod.outlook.com

mapi

1 sec

2

6/18/2020
11:41:45 AM

HE1PR0401MB2460.eurprd04.prod.outlook.com

HE1PR0401MB2665.eurprd04.prod.outlook.com

Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384)

*

3

6/18/2020
11:41:48 AM

mail-he1eur01lp2052.outbound.protection.outlook.com

xink-rerouter-us.eastus.cloudapp.azure.com

esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <jeroen.huylebroeck@jciaalst.be>)

3 sec

4

6/18/2020
11:41:49 AM

xink-rerouter-us.eastus.cloudapp.azure.com

AM5EUR03FT017.mail.protection.outlook.com

Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384)

1 sec

5

6/18/2020
11:41:49 AM

AM5EUR03FT017.eop-EUR03.prod.protection.outlook.com

AM4P190CA0012.outlook.office365.com

Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384)

*

6

6/18/2020
11:41:49 AM

AM4P190CA0012.EURP190.PROD.OUTLOOK.COM

AM6PR0402MB3606.eurprd04.prod.outlook.com

Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384)

*

Original Message Headers

Received: from AM4P190CA0012.EURP190.PROD.OUTLOOK.COM (2603:10a6:200:56::22) by AM6PR0402MB3606.eurprd04.prod.outlook.com (2603:10a6:209:8::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3109.22; Thu, 18 Jun 2020 11:41:49 +0000Received: from AM5EUR03FT017.eop-EUR03.prod.protection.outlook.com (2603:10a6:200:56:cafe::2) by AM4P190CA0012.outlook.office365.com (2603:10a6:200:56::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3109.22 via Frontend Transport; Thu, 18 Jun 2020 11:41:49 +0000Authentication-Results: spf=fail (sender IP is 52.186.121.110) smtp.mailfrom=jciaalst.be; jciaalst.be; dkim=none (message not signed) header.d=none;jciaalst.be; dmarc=none action=none header.from=jciaalst.be;Received-SPF: Fail (protection.outlook.com: domain of jciaalst.be does not designate 52.186.121.110 as permitted sender) receiver=protection.outlook.com; client-ip=52.186.121.110; helo=xink-rerouter-us.eastus.cloudapp.azure.com;Received: from xink-rerouter-us.eastus.cloudapp.azure.com (52.186.121.110) by AM5EUR03FT017.mail.protection.outlook.com (10.152.16.89) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3109.22 via Frontend Transport; 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This seems highly surprising, as I am a member of the group:

 

Untitled.png

 

Any ideas as to how I can troubleshoot this effectively?

1 Reply

@jhuylebroeck - When you set up a channel meeting, the only people who will receive an Outlook invite are those you put in the 'to' line.  It sounds like you might be putting a distribution list (group email) that includes accounts that are not set up to receive emails.

It sounds like you might need to allow your DL to receive emails.

 

Maybe you could clarify who you are adding on the 'to' line.