We've listed the most common error messages below, along with suggested resolutions. As the emails work from OWA, Based on the NDR, It seems either the email address is incorrect or the external party has blocked your email (May be SPAM filtering). 1. Yes it's correct, when a user sends email from DG email, no NDR is received in case of problem with an email not sent. Gift Cards - Big Fish Restaurant Group You could refer to the approach of the expert response in the case. To: CNF , Commercial A Microsoft API that supports accessing data in users' primary mailboxes and in shared mailboxes. You could refer to the approach of the expert response in the case. That's why I'm coming back to some sort of machine infection or email hack. You can also go to Exchange admin Center ( https://Outlook.office.com/ecp ) using your Global Admin and then Navigate to Protection < Action Center for your Blocked Users (from sending emails) 3. Diagnostic information for administrators: Generating server: SVR-EXCH.domain.local IMCEAINVALID-xxxxx+40xxxx+2Ech@local domain Remote Server returned '550 5.1.0 RESOLVER.ADR.InvalidInSmtp; encapsulated INVALID address inside There is additional information for email administrators: This error occurs when the group is configured to reject email from senders outside of the groups organization. Sign in to Microsoft 365, and then open the Exchange admin center. The NDR (non-delivery report) appears that you entered an invalid mail address. If you organization cannot send emails to other mail servers, you can take steps below to solved this issue: If the response is helpful, please click "Accept Answer" and upvote it. Delivery has failed to these recipients or groups: - Microsoft Q&A 11:20:37 +0000 From: Microsoft Outlook 4. Delivery has failed to these recipients or groups: The recipient's mailbox is full and can't accept messages now. the flow still runs successfully to the end, but the sent emails (from my tenant email: ******@tenant.onmicrosoft.com) become undeliverable to emails outside my tenant, 1. i changed the "To" field to my tenant email (keeping Office 365 outlook connector) and it went through nice and i recived the email in my inbox. Just to confirm Normal user mailbox sends an email to External email address. Delivery has failed to these recipients or groups: xxxx@xxx.xx' INVALID:xxxx@xxxx.xx) This message was rejected by the recipient email system. We have an Exchange 2013 and Office 2010. Flashback: March 3, 1971: Magnavox Licenses Home Video Games (Read more HERE.) To get help and troubleshootother Microsoftproducts and services,enteryour problem here. Webinar: Reduce Complexity & Optimise IT Capabilities. Microsoft Exchange will not try to redeliver this message for you. Welcome to the Snap! Hi, I am receiving this message when an internal sender, with mailbox on the same Office 365 installation, tries to email security groups from an external mail service, even though that mail service (Pardot) is listed in the domains SPF record. Receiving server: BN6PR02MB2548.namprd02.prod.outlook.com Opens a new window X-MS-PublicTrafficType: Email This could be because the recipient's address has changed or the recipient's email account has moved. If it has been used up, you can clean up the old mailbox in settings->General->Storage. Date: Thu, 29 Oct 2020 11:20:37 +0000 Mails getting undelivered while sending mail through sendEmail() in Try this fix: If you have another way to contact the recipient, let them know that their mailbox is full. Delivery has I guess they were trying to capture some invoicing details so that payment could be redirected to their bank account. Delivery has failed to these recipients or groups Office 365: Strange Non Delivery Report - The Spiceworks Community Hi, When someone sends me an email, I receive it but also receive an email of failure of forwarding it to another email. outlook mail - Microsoft Q&A - learn.microsoft.com If this doesn't resolve the problem, or if the user is using Outlook Web App, go to step 2. Clearing Cache should fix it. If we are in trial edition, then is it possible that we have sometrigger limit for sending out email? Any behavior that is insulting, rude, vulgar, desecrating, or showing disrespect. X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Oct 2020 11:20:37.1706 Delivery has failed to these recipients or distribution lists: The recipient's e-mail address was not found in the recipient's e-mail system. I thought at some point Cisco was going to build in the ability to customize the Undeliverable messages. Opens a new window, These are spoofed NDRs, they aren't really NDRs, just emails designed to look like NDRs so users will click phishing links. Your message Often, this error message has the same cause as the Mailbox not found message. From: Roland Nyambu Meeting invite Undeliverable - social.technet.microsoft.com If you are using Exchange on-premises, delete/disable all send connectors, then recreate a new with. You need check if you can open that problematic mailbox if this mailbox mounted. Delivery has failed to these recipients or groups We've listed the most common error messages below, along with suggested resolutions. Please try resending the message. @Preeti321 Any specific reason you want to send emails from your Tenant Address and not your own Custom Domain ? Despite repeated attempts to contact the recipient's If the problem continues, please contact your email admin. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. If the problem continues, please contact your email admin. Remove any old/invalid email addresses from the group. 2020 11:20:37 +0000 I'm excited to be here, and hope to be able to contribute. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Here is the message I keep getting: Delivery has failed to these recipients or groups: ***@*****. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Review the email addresses that are shown in the error report. Delivery has failed to these recipients or groups: Any help on this issue would be really appreciated. Thnx for replying. Most people don't both because it's painfully slow to insert the translated strings for multiple languages. I support several clients using Office 365 and two of them are having the same problem. If you have extra questions about this answer, please click "Comment".. Paul is a former Microsoft MVP for Office Apps and Services. Delivery has failed to these recipients or groups: I have been receiving complaints about getting these errorsDelivery has failed to recipients or distribution lists. Click the Mail tab. @ankit shukla, @Preeti321Your welcome, please mark as answer , if it resolved your issue :). When I try to send an email to the same recipient from Microsoft Office 365 Error: "Delivery has failed to these recipients or Contact the Received: from AM6PR03MB5217.eurprd03.prod.outlook.com (2603:10a6:20b:cd::20) 0.35250:0A001F67, 1.36674:01000000, 1.61250:00000000, 1.45378:02000000, 1.44866:00000000, 1.36674:02000000, 1.61250:00000000, 1.45378:05000000, 1.44866:14000000, 1.36674:06000000, 1.61250:00000000, 1.45378:12000000, 1.44866:0B000000, 1.36674:A1000000, 1.61250:00000000, 1.45378:21000000, 1.44866:5C000000, 1.36674:09000000, 1.61250:00000000, 1.45378:80000000, 1.44866:00010000, 1.36674:08000000, 1.61250:00000000, 1.45378:83000000, 1.44866:00100000, 16.55847:FB000000, 17.43559:00000000B6030000000000000000000000000000, 20.52176:140FAB8D1200702003000136, 20.50032:140FAB8D821710104B000000, 0.35180:0A00DA36, 255.23226:1F000000, 255.27962:02000000, 255.27962:06000000, 255.17082:DD040000, 0.24929:55000000, 4.21921:DD040000, 255.27962:FA000000, 255.1494:66000000, 0.38698:0F010480, 7.36354:010000000000010C2A3E96DE, 7.36354:010000000000010C0F010480, 5.29818:0000000064643537373232622D626133362D343966372D613639622D356462366639376466336436002D6632, 1.29920:03000000, 7.29828:B0861E800C00000037663634, 7.29832:000000800C000000612AC6A9, 4.45884:DD040000, 4.29880:DD040000, 4.59420:DD040000, 7.49544:010000000000010C4F000000, 8.45434:2B7257DD36BAF749A69B5DB6F97DF3D600000000, 5.10786:0000000031352E32302E333439392E3031383A564931505230334D42363233373A62326136306433332D663232622D343539612D623363392D3365303566306637663634300020100F010480, 7.51330:691EE2A9FC7BD80808000000, 0.39570:00000000, 1.64146:02000000, 1.33010:02000000, 2.54258:00000000, 0.58802:12000000, 1.64146:06000000, 1.33010:06000000, 2.54258:DD040000, 255.1750:A9000000, 255.27962:A1000000, 255.17082:B9040000, 0.27745:AE000000, 4.21921:B9040000, 255.27962:09000000, 0.26881:B3000000, 255.21817:B9040000, 0.60978:A9000000, 0.36402:B8000000, 4.38450:DD040000, 0.47602:AE000000, 4.63986:DD040000, 0.22945:03000336, 4.31137:DD040000, 0.26529:C2000000, 4.29953:DD040000, 0.32768:B8000000, 4.33024:DD040000 [Stage: CreateMessage]' document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); On the show this week, find out what's happening with recent changes to Exchange Online that might cause a delay if you're setting up a fresh Hybrid environment; plus security recommendations for your on-premises Exchange environment. X-MS-Oob-TLC-OOBClassifiers: OLM:1728; Exchange 2007: Delivery has failed to these recipients or distribution Try this fix: Instead of sending large attachments via email, upload them to OneDrive and send the recipient a link. Diagnostic information for administrators: Generating server: MAIL.domain.local Click Contact, select the external recipient, click Edit (. You can also increase the storage limit of user mailboxes by purchasing better services. Spam abuse detected from IP range. For more Threats include any threat of suicide, violence, or harm to . If your error message says that the recipient's email provider will keep trying to deliver your message, you don't need to take any further action. Hi @Roland Nyambu , I made the test when sending the same email from a normal user and I get the undeliverable email. Ive tried to send the same message to the same recipient with Outlook 2010 and 2016, try to delete the user Undeliverable response received when accepting meeting requests Please check the recipient's email . I realized I messed up when I went to rejoin the domain More info about Internet Explorer and Microsoft Edge, https://learn.microsoft.com/en-us/exchange/troubleshoot/email-delivery/mapiexceptionnotfound-ndr. From: Mail Delivery System <MAILER-DAEMON@relay-mail01.westnet.com.au> To: Simon <simon@accounts.com.au> Subject: Undeliverable: TV from Ben Delivery has failed to these recipients or groups: simon@accounts.com.au A problem occurred during the delivery of this message to this e-mail address. The NDR states: Your message couldn't be delivered because the group you're sending to needs to know who you are before it will accept your message. This article describes how to use PowerShell to extract and report sensitivity label settings, including highlighting rights assignments that might be out of date. Select an error below to see more information. Sharing best practices for building any app with .NET. Can you please advise how to identify which SMTP is being used to send out Salesforce notifications? Hi Team, It's an example of just how useful PowerShell is to Microsoft 365 administrators. I thought that might be the case, but between the 2 different clients, there were different references to different sources: one was Intuit and one was Network for Good (a well known donation processing service). A family of Microsoft client/server messaging and collaboration software. Have you checked if the email is sent to your mailbox by the flow some minutes afterthe flow run successfully? Going to check both machines, check Outlook to see if there are any rules, etc. Delivery has failed to these recipients or groups: - Experts Exchange None of your email accounts could send to this recipient. What Is the "Delivery Has Failed to These Recipients or Groups" Message? Documentation - https://learn.microsoft.com/en-us/exchange/troubleshoot/email-delivery/mapiexceptionnotfound-ndr, Hi @Roland Nyambu If you have added the recipient as a contact, please check the email address in the contact card. See below the error message when we try to send from the standard user. i have a couple of flows in which i use the send email at the end of the flow, but in the last couple of days all emails which were sent returned "Delivery has failed to these recipients or groups" in my email inbox although when i try to resend the email manually it sends with no failure. John, I get this error when a appication inside my org is trying to send an email to a distribution group in my org. External emails addresses are Exchange recipients. X-MS-Exchange-CrossTenant-AuthSource: AM6PR03MB5217.eurprd03.prod.outlook.com