Diagnostic information for administrators: Generating server: EXCHANGE2010SVR.mydomain.l The same message
More info about Internet Explorer and Microsoft Edge, https://learn.microsoft.com/en-us/exchange/troubleshoot/email-delivery/mapiexceptionnotfound-ndr. After investigation, Ive noticed IMCEAINVALID-m+2Recipient+40RecipientDomain+2Ech@InternalDomain error in Exchange message tracking log. When I try to send an email to the same recipient from
Plus Microsoft Syntex's PAYG model goes live and Teams gets user experience changes that your users will certainly notice. Your message is too large for the recipient's email server. Diagnostic information for administrators: sending emails from flow returns "Delivery has fai "SupervisorName" dynamic content in the To field a accessble email address, and check ifthe email is sentto yourmailbox by the flowsome minutes afterthe flow run successfully, also please check if the email arrives and you have some other flow would delete the new email. I do not want to let outsiders being able to send to that group. More info about Internet Explorer and Microsoft Edge, Remote Server returned '550 5.7.501 Service unavailable. Any behavior that is insulting, rude, vulgar, desecrating, or showing disrespect. Could you please share more run details when the flow runs? Please let us know if you would like further assistance. I made many tests in order
Your message couldn't be delivered. x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(22001);SRVR:BN6PR02MB2548; x-microsoft-exchange-diagnostics: 1;BN6PR02MB2548;24:izjGFq6HpxYq3kkOupIJCOrlRe7rDlryT+s+gu8C/6uuCsnhqnofkKE6jJ38ZAv80/iRMt6nZuaL/NYxPKnfUhkwTLi9hFv+kxjYIvPCQhY=;23:UDn7X1Gak1BRYjIef/8aGRpQT5ZVM8XcVsfX8U+MrKKVizr+TykH9flhcnG4GK+94t09HXfeU5docEvgEgnnPiGVciBFw4Xz3PL6KfYB8IkNQ9R2k84Hvdv79UogxSuKgWFhNE855VacwC4hTJiPwA==. Please try resending the message. 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. 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. X-Microsoft-Antispam: BCL:0; And I don't actually see any links in the message that would be trying to lure the user. We have an Exchange 2013 and Office 2010. Ive also tried the same thing with OWA, worked properly with no error message. Most people don't both because it's painfully slow to insert the translated strings for multiple languages. If the answer is helpful, please click "Accept Answer" and kindly upvote it. Thnx for replying. After LastPass's breaches, my boss is looking into trying an on-prem password manager. couldn't be delivered. 11:20:37 +0000 X-MS-Exchange-CrossTenant-MailboxType: HOSTED If you receive one of these messages, the address you used doesn't exist. According to the SMTP status code [1] it could be one of three things. Delivery has failed to these recipients or groups: cheryldoel@gmail.com (cheryldoel@gmail.com) A communication failure occurred during the delivery of this message. I support several clients using Office 365 and two of them are having the same problem. Do suggestions above help? Sharing best practices for building any app with .NET. The following recipient(s) cannot be reached: If the problem continues, please contact your email admin. For the moment my problem is why I don't receive an undeliverable message to the group and not why I get IMCEAINVALID
This problem may occur if one of the following conditions is true: To resolve this problem, follow these steps: If the user is using Microsoft Outlook to send mail, clear the external contact's name from the Outlook Auto-Complete list. returned '550 5.4.300 Message expired'. Please try to resend the message later. Must be a common attacker because we got 2 different people from different companies in different cities with the same forwarding email address. If that fails, check the recipient's email address for typos. Total retry attempts: 53, outmails2015@gmail.com A problem occurred during the delivery of this message. A Microsoft API that supports accessing data in users' primary mailboxes and in shared mailboxes. Please try to resend the message later. rohit_dua@dell.com According to the error information you provided, we could know this error caused by recipients mailbox is full. Remote Server returned '554 5.4.0'. Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge. See the "User Has a Full Mailbox" section. The message headers have references to Intuit. https://wiki.mattrude.com/SMTP_Status_Codes, https://developer.salesforce.com/docs/atlas.en-us.salesforce_app_limits_cheatsheet.meta/salesforce_app_limits_cheatsheet/salesforce_app_limits_platform_email.htm, Your server has been blacklisted by the recipients server. For the specific limit information of different versions of Office 365, you can refer to:Mailbox storage limits. This is going to get a lot of people for sure as they wont know until someone complains or if they test the address (of course mine didnt even accept from an internal address so still have fingers crossed) Link:https://portal.office.com/adminportal/home#/groups. Actually a user receives this IMCEAINVALID error when he try to send an email. Click Contact, select the external recipient, click Edit (. Choose the account you want to sign in with. If the problem continues, contact your helpdesk. Accept-Language: en-US See below the error message when we try to send from the standard user. 11. Then check the NDR messages for more detailed information to see if the recipients lack of X500 addresses or any other reasons. John, I get this error when a appication inside my org is trying to send an email to a distribution group in my org. @ankit shukla, @Preeti321Your welcome, please mark as answer , if it resolved your issue :). Delivery has failed to these recipients or groups: Your message couldn't be delivered. If you see the error code 5.3.0 that cooresponds with the error SMTP error code I provided earlier, You need to reach out to whomever runs your mail server. I have checked it already. Additionally, your organization can send single emails to a maximum of 15 email addresses per day. Below are the most common solutions to getting your email delivered successfully: Check the spelling of the email address for typos Check that the person gave you the correct email address The recipient's mailbox is full and can't accept messages now. Please check the recipient's email . 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. This recipient e-mail address was not found in the recipient e-mail system. Received: from AM6PR03MB5217.eurprd03.prod.outlook.com (2603:10a6:20b:cd::20) Delivery has failed to these recipients or groups: xxxx@xxx.xx' INVALID:xxxx@xxxx.xx) This message was rejected by the recipient email system. 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. I believe the reg has to be on every mailbox server, set-distributiongroup "Displayname of the group" -ReportToManagerEnabled:$true -ReportToOriginatorEnabled:$false, Undeliverable message not received when sending an email from a Distribution Group Universal, Exchange Server 2013 - General Discussion. the recipient's email address and try resending this message, or contact the recipient directly. Despite repeated attempts to contact the recipient's email system it didn't respond. We can fix the IMCEAX NDR quite easily. In the past we already had this issue but we fixed it by deleting the email address in the field TO
Please turn off your ad blocker and refresh the page to subscribe. The recipient's mailbox is full and can't accept messages now. 2. Power Platform Integration - Better Together! 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 2. i changed the Send email" action from Office 365 outlook connector to Outlook.com (using my personal email) and the email are sent successfully. (UTC) One more thing I can tell, This is a new tenant that I have created recently. If you are using hybrid, delete all connector from Exchange online, remove send connector from Exchange on-premises, then rerun HCW to recreate them. Delivery has failed to these recipients or groups: employeeb@domain.com. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. He works as a consultant, writer, and trainer specializing in Office 365 and Exchange Server. When an external sender attempts to send an email message to an Office 365 group they may receive a non-delivery report (NDR). {550 5.7.133 RESOLVER.RST.SenderNotAuthenticatedForGroup; authentication required; Delivery restriction check failed because the sender was not authenticated when sending to this group}, Watch out since there are two ways to edit a group in Exchange 365the newer more web 3.0 method through the upper level admin center has an extra toggle switch whereas the old method in the exchange admin does not include this and/or is not connected. Office 365: Delivery Has Failed to These Recipients or Groups. Threats include any threat of suicide, violence, or harm to . External emails addresses are Exchange recipients. Remove any old/invalid email addresses from the group. Sensitivity labels support local language values, meaning that you can translate the display name and tooltip for labels so that they appear in the language chosen by a user. I have been receiving complaints about getting these errorsDelivery has failed to recipients or distribution lists. 2020 11:20:37 +0000 This could be because the recipient's address has changed or the recipient's email account has moved. However, I do get the message and it is forwarded to my gmail acount from Microsoft 365 Outlook. To fix this problem, as the email admin for the group to configure the group to accept messages from you. And what are the pros and cons vs cloud based? You can also perform this change in PowerShell. IMCEAINVALID error and why DG is not able to receive NDR. Your message wasn't delivered because the recipient's email provider rejected it. below. If we are in trial edition, then is it possible that we have sometrigger limit for sending out email? The "554 5.4.0" error is related with too many hops. AS (4567)' Original message headers: if the problem appears again. Indeed If we have this issue is because there is a problem with Exchange or Outlook. (auto complete list)and retyping the address . Various trademarks held by their respective owners. Harassment is any behavior intended to disturb or upset a person or group of people. Try this fix: Check the recipient's email address for typos. I am writing here to confirm with you how thing going 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. Delivery has failed to these recipients or groups. 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 recipient's mailbox is full and can't accept messages now. Please try resending your message later, or contact the recipient directly. MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@XXXXXXXX.onmicrosoft.com, http://go.microsoft.com/fwlink/?LinkId=389361, 355211102.4955021487946249568.JavaMail.app@pprdforas900.ie.intuit.net. X-MS-Exchange-CrossTenant-Network-Message-Id: 70c44563-e63b-4e5c-bf5e-08d87bfca920 I wanted to know if i can remote access this machine and switch between os or while rebooting the system I can select the specific os. *Subject:* Undeliverable: You have been designated as a delegate for Jane Dow *To:* Jane Dow Delivery has failed to these recipients or groups: John Doe You can't send a message on behalf of this user unless you have permission to do so. Harassment is any behavior intended to disturb or upset a person or group of people. I have had this problem for a while and can't find a solution! Return-Path: rnyambu@e19310 .co.ke "Delivery has failed to these recipients or distribution lists: Person B The recipient's e-mail address was not found in the recipient's e-mail system. Yep, that's probably what your issue is. Content-Language: en-US i am not sure if this is a problem with flow or outlook 365 connector. Try this fix: If you have another way to contact the recipient, let them know that their mailbox is full. When an Exchange Online user tries to send email messages to an external contact, the messages aren't delivered, and the user receives an error message that resembles the following: Delivery has failed to these recipients or groups: There's a problem with the recipient's mailbox. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. THe bounce back received is as follows:- Delivery has failed to these recipients or groups: You can also increase the storage limit of user mailboxes by purchasing better services. Can you confirm the "Target Address" attribute for this DG and the primary mailbox? cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3499.19; Thu, 29 Oct X-Originating-IP: [105.27.208.59] For more information about how to do this, see Delete a name from the Auto-Complete list. This topic has been locked by an administrator and is no longer open for commenting. X-Microsoft-Antispam-Message-Info: 368YntzXjYBlROPwvKLcXthTAXAA9KBuXRDWX3O6J34/yxtUdz+czuZe8BvCxX/YPqNbvzplv79Y8jvKDbNgZLzqSZwxAZ0qyMyw8xXmLVoKCbxo9KFCwBss5UGDBrC/lSYBLEvR/zX28nTQm19VTw== Here is a similar case: Remote Server returned '550 5.7.501 Service unavailable. 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. 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). Your message Please check the recipient e-mail address and try resending this message, or provide the following diagnostic text to your system . Im going to be clearer, actually no NDR is received when IMCEAINVALID error on Exchange server. I had a similar situation where they hacked an email account and sent an email to a customer - complete with all relevant names, details, logo's, etc. Microsoft Exchange will not try to redeliver this message for you. Subject: TEST MAIL They are getting errors like the following: Delivery has failed to these recipients or groups: Intended recipientYou can't send a message on behalf of this user unless you have permission to do so. To fix this issue your Tenant needs to be added to a sending exclusion for 60 days to allow them to use blocked IPs whilst they still have a new/trial license. Below is the error message received after sending emails to our distribution lists. I have turned off the forwarding yet there is no change. So, first interaction here, so if more is needed, or if I am doing something wrong, I am open to suggestions or guidance with forum ettiquette. This browser is no longer supported. X-MS-Exchange-CrossTenant-AuthAs: Internal Give them the usernames that you are having problems with as well as a timestamp that the error occured. From: Roland Nyambu Confirm that you or another administrator did not inadvertently delete a user who was assigned to review the messages for Cisco Unity Connection entities. Delivery has failed to these recipients or groups: Stewart Dennis L (*** Email address is removed for privacy ***) Your message couldn't be delivered. Can you please advise how to identify which SMTP is being used to send out Salesforce notifications? Post questions, follow discussions and share your knowledge in theOutlook.com Community. an SMTP address (IMCEAINVALID-)'. For example, the recipient address in the NDR resembles the following: IMCEAEX-_O=MMS_OU=EXCHANGE+20ADMINISTRATIVE+20GROUP+20+28FYDIBOHF23SPDLT+29_CN=RECIPIENTS_CN=User6ed4e168-addd-4b03-95f5-b9c9a421957358d\@mgd.domain.com. As you can see on my previous message, in the diagnostic information you
Undeliverable: Delivery has failed to these recipients or groups When I send Emails To Myself From Outlook App On Android. I decided to let MS install the 22H2 build. If you are using Exchange on-premises, delete/disable all send connectors, then recreate a new with. X-MS-Has-Attach: I have been receiving complaints about getting these errorsDelivery has failed to recipients or distribution lists. Could you please share a full screenshot of the configuration of your flow? Can you tell me where I can check the Email information whether I will check in the Exchange admin center or anywhere else? Would the "SupervisorName" dynamic content in the To field of the "Send an email" action be a accessble email address? Diagnostic information for administrators: Additionally, are you a Microsoft Vendor (working for Support Projects) worldwide? X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:-1;SRV:;IPV:NLI;SFV:SKI;H:AM6PR03MB5217.eurprd03.prod.outlook.com;PTR:;CAT:NONE;SFS:;DIR:INB; set-distributiongroup "Displayname of the
If you can't sign in, click here. header.from=mackenzie.co.ke; Honestly, I would like that to be the case. Your daily dose of tech news, in brief. Webinar: Reduce Complexity & Optimise IT Capabilities. Select an error below to see more information. Business process and workflow automation topics. Send delivery reports to message originatorClick this button to send NDRs to the message sender. Thank you so much in advance for your help. I gave permissions to some users to send emails from a distribution group, everything work well but we have noticed that some emails arent received by our clients. Date: Thu, 29 Oct 2020 11:20:37 +0000 As you can see on my previous message, in the diagnostic information you
Below represents my Office 365 Email Id format which I have provided: Can anyone suggest to me how I can resolve this issue? so i think theere was some kind of update to the office 365 outlook connetor which would make it send email only to inside tenant emails, and this problem started last Friday. After connecting to Exchange Online with PowerShell use the Set-DistributionGroup cmdlet to modify the setting. Bonus Flashback: March 3, 1969: Apollo 9 launched (Read more HERE.) Hi, When someone sends me an email, I receive it but also receive an email of failure of forwarding it to another email. Contact the recipient by some other means (by phone, for example) and ask them to tell their email admin that it appears that their email system isn't accepting connection requests from your email system. Find out more about the Microsoft MVP Award Program. Thread-Topic: TEST MAIL Try this fix: Instead of sending large attachments via email, upload them to OneDrive and send the recipient a link. Delivery has failed to these recipients or groups: user1@somedomain.com A problem occurred during the delivery of this message. This error typically indicates a problem on the receiving server. RunspaceId : 93d51ae8-6e27-4b67-b3ed-0128982220f1, IsInternal : False, TargetDeliveryDomain : False, ByteEncoderTypeFor7BitCharsets : Undefined, CharacterSet : iso-8859-1, NonMimeCharacterSet : iso-8859-1, AllowedOOFType : ExternalLegacy, AutoReplyEnabled : True, AutoForwardEnabled : True, DeliveryReportEnabled : True, NDREnabled : True, MeetingForwardNotificationEnabled : False, ContentType : MimeHtmlText, DisplaySenderName : True, PreferredInternetCodePageForShiftJis : Undefined, LineWrapSize : Unlimited, TrustedMailOutboundEnabled : False, TrustedMailInboundEnabled : False, UseSimpleDisplayName : False, NDRDiagnosticInfoEnabled : True, MessageCountThreshold : 2147483647, ExchangeVersion : 0.0 (6.5.6500.0), Name : Default, DistinguishedName : CN=Default,CN=Internet Message Formats,CN=Global, Exchange,CN=Services,CN=Configuration,DC=xxxx,DC=lu, Identity : Default, Guid : 7aa21c37-dc3c-47c6-bd2e-a2ffd1de0863, ObjectCategory : xxx.lu/Configuration/Schema/ms-Exch-Domain-Content-Config, ObjectClass : {top, msExchDomainContentConfig}, WhenChanged : 30/08/2015 11:08:01, WhenCreated : 21/11/2003 12:19:00, WhenChangedUTC : 30/08/2015 09:08:01, WhenCreatedUTC : 21/11/2003 11:19:00, Id : Default, OriginatingServer : SVR-DC20.xxxx.lu, IsValid : True, ObjectState : Unchanged. When an external sender attempts to send an email message to an Office 365 group they may receive a non-delivery report (NDR). So today I got this email even though I didn't attemtp to write an email today. X-MS-Exchange-Transport-Forked: True Welcome to the Snap!
I have to wait that user test it but I'll let you know the result. Delivery has failed to these recipients or distribution lists: '<User>'. Came very close to losing 55k payment on that occasion. so the flow succeeds, but emails don't get sent! The email remains on Exchange server and is not blocked by any spam filter. If the problem continues, please contact your email admin. How do the spoofers know what the subject of an email a person sends? Message-ID: In my case, around 9pm in night most of the time we receive a bounce back email in outlook.So can this be a server issue also, might be there is more load on server at night time? If you have confirmed the recipient's email address but the eGift Card has not been received within a reasonable period after the requested delivery date, following is a list of the most common reasons why delivery may have failed: a. If the question has been answered, please accept the helpful replies as answers, this will make answer searching in the forum easier and be beneficial to other community members as well. X-MS-Oob-TLC-OOBClassifiers: OLM:1728; 2023 Quest Software Inc. All Rights Reserved. Diagnostic information for administrators: Generating server: MAIL.domain.local Please share more details so we could try to provide a proper workaround for you. Is DG able to receive External emails? They. Is there a way i can do that please help. Also, the members of the DG would receive the emails. Besides, please follow the steps below and clear Outlook Auto-Complete List to see if it helps: Open Outlook. Subject: TEST Reduce the number of recipients in the message. information and tips to fix this issue see this article: http://go.microsoft.com/fwlink/?LinkId=389361 Opens a new window. X-MS-Exchange-AntiSpam-MessageData: 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 Confirm that the user mailbox is not full. I have noticed a very critical issue when sending emails from a distribution group -universal on our Exchange 2013. ([fe80::4813:72b:8e30:b43e%6]) with mapi id 15.20.3499.027; Thu, 29 Oct 2020 Below is the error message received after sending emails to our distribution lists. Are these invoices sent from Quickbooks? 2/26/2017 3:36:23 PM - Server at BN6PR02MB2548.namprd02.prod.outlook.com Opens a new window Generating server: Hi All, One of my user is facing issue sending email to an external domain user. If not, and you are only using it for your Own Learning and testing, you should not use domain.Onmicrosoft.com address for sending emails (except) testing. Please delist your Tenant and IP by opening a Microsoft Support ticket. user1@somedomain.com I would check if something similar has happened, they did not do that just for fun. Clearing Cache should fix it. From: Microsoft Outlook Please check
Make sure that the proxy address is set correctly in Microsoft 365. Remote Server returned '550 5.2.0 RESOLVER.ADR.BadPrimary; recipient primary SMTP address is missing or invalid'. Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread. Any image, link, or discussion of nudity. The problem appears with many email addresses. Any ideas how to resolve that? You may withdraw your consent at any time. If you have another way to get in touch with the recipient, see if they have a new email address. Please check if the"SupervisorName" dynamic content in the To field a accessble email address, and check ifthe email is sentto yourmailbox by the flowsome minutes afterthe flow run successfully, also please check if the email arrives and you have some other flow would delete the new email. 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. Resolution It should be noted that it may take up to 24 hours after deletion to receive mail normally again. The Domain Name System (DNS) reported that the . Any help on this issue would be really appreciated. Switch the setting to On to enable external senders to send email to the group. If the response is helpful, please click "Accept Answer" and upvote it. and was challenged. When you send an email and receive a delivery failure message, there could be several reasons. The MTA administrator is whomever manages the mail server for Dell. Good times! You need to hear this. eGift Cards are delivered via email. Select an error below to see more information. Diagnostic information for administrators: Generating server: user1@somedomain.com Remote Server returned '554 5.4.0' Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Many email systems prevent users from receiving any new mail until they reduce their mailbox size. Keep up to date with current events and community announcements in the Power Automate community. Hi @Roland Nyambu , Spam abuse detected from IP range. Review the email addresses that are shown in the error report. See the "Undeliverable Messages Not Forwarded to Recipients" section. Power Platform and Dynamics 365 Integrations. it only started today, and the email still comes through that is says was undeliverable. @Preeti321The Error clearly confirms, that due to Too many Spam email sent on the specific domain has been Flagged, and Tagged on SpamHaus (Global Directory) for IP Blacklisting. In this case, your account will not be allowed to send emails until an admin approves you. Content-Type: application/ms-tnef; name="winmail.dat" Will await your confirmation.