You do not have permission to send the message on behalf of the specified user office 365 You configure a Microsoft Outlook profile for the shared mailbox and enter your own credentials to access it. com "You do not have permission to send on behalf of the specified user. after migrating all three objects to the new email domain, I attempt to "send as" and/or "send on behalf" either shared mailbox or group from Outlook using the new email address, but it bounces back stating "You do not have the permission to send the message on behalf of the specified Jan 30, 2025 · You do not have the permission to send the message on behalf of the specified user". Permissions in Exchange hybrid deployments | Microsoft Learn Corey7569 (Corey) March 23, 2020, 1:40pm 8 Jan 24, 2022 · This message could not be sent. This is not a shared mailbox, no delegations are required. Feb 1, 2025 · This message could not be sent. " I have given myself full control and send as permissions and do not have send on behalf permissions. Feb 12, 2025 · I understand that when you are using the desktop Classic Outlook application, you are unable to send a message with a message that you do not have permission to send a message on behalf of the specified user. Nov 29, 2020 · You do not have the permission to send the message on behalf of the specified user. But if the user did, the permission may have been removed if the mailboxes were migrated from On-Premises to Exchange Online. Also, it’s required to add or remove shared mailboxes from your Outlook account. Jun 16, 2022 · Subject: test Sent: 16/06/2022 13:24 The following recipient (s) cannot be reached: ``` Garry Barton (SHHS) on 16/06/2022 13:24 This message could not be sent. However even though the Apprentice has “Send As”, “Send On Behalf” and “Full Access”, whenever she sends emails from the receptionists mailbox she gets the below NDR: This message could not be sent. You do not have the permission to send the message on behalf of the specified user. Apr 21, 2021 · Microsoft 365 user is getting error “You do not have the permissions to send the message on behalf of the specified user. I have a user with full access and send as access to a shared mailbox. See full list on support. Try sending the message again later, or contact Jan 2, 2025 · Suddenly Receiving "This message could not be sent. The message includes the phrase, "You do not have the permission to send the message on behalf of the specified user. Jan 21, 2021 · Hello, We are hybrid Exchange with On-Prem/O365 I have distribution groups. May 31, 2016 · If you spend a minute searching, you will find all the articles are how Send As permissions should work with Office 365, Exchange Online and Outlook 2016. . Mar 19, 2019 · Send as permission or send on behalf? Send-As: Lets a user send mail as though it appears to be coming from another user’s mailbox. Provides a resolution. They work OK. Oct 6, 2023 · I've checked that I have SendAs permissions, and if I send an email to the mailbox, I can reply just fine, but when I compose a new email and send I get " This message could not be sent. " Jan 9, 2025 · Hello, Larry Williams3. Welcome to Microsoft community. I have created aliases. Mar 20, 2020 · Also, Azure AD Connect doesn’t automatically synchronize Send As permission between on-premises Exchange and Office 365, so cross-premises Send As permissions aren’t supported. Subject: Test 5:44pm Sent: 25/06/2025 5:45 PM The following recipient (s) cannot be reached: William Parton on 25/06/2025 5:45 PM This message could not be sent. Jun 14, 2017 · The message subject says "Undeliverable: msg from a group" and the message text informs about the issue: "This message could not be sent. But when the Feb 12, 2020 · Hi, We have an Exchange 2013 CU 22 environment. You send an email message from this Outlook profile. Mar 11, 2022 · I have an email account with a name like xxxxx@outlookDOTcom Sometimes when I try to send a message from that account I get a message where the subject starts, "Undeliverable:" followed by the original subject title. If necessary, you can add the Office 365 email account as a delegate for your Hotmail account to grant the necessary permissions. Looking at exchange admin, this dist list looks OK. Apr 26, 2023 · I immediately get back a message saying This message could not be sent. Jan 26, 2016 · I would like to say that it is either working or not working with confidence, however after I tried these two commands on myself, on a shared mailbox that I am not delegated either full access or send as permissions, gave myself a fresh send on behalf permission by using the above command, sending a test email and working. Dec 20, 2024 · "This message could not be sent. Thoughts? Perhaps the user didn’t have the appropriate Send As permission to the mailbox. I understand you're encountering an issue when attempting to use the "Resend this message" feature from a shared mailbox in Outlook, despite having full access and send-as permissions. You don't have permission to send messages on behalf of the specified user. Error is [0x80070005-0x0004dc-0x000524]. ". I understand that you seem to be experiencing "This message could not be sent. ” This issue has disrupted workflows for businesses that rely heavily on shared mailboxes for customer support, team communication, or other collaborative tasks. Feb 1, 2024 · This message could not be sent. " The weird part is that it only appears with new shared mailboxes, not on old ones. " If so, kindly see Resolve issues with shared mailboxes - Microsoft 365 admin | Microsoft Learn Hi guys, I have been running into the issue that people from different 365 tenants can't email on behalf of a shared mailbox. I created a test user, shared mailbox, and Microsoft group. You do not have the permission to send the message on behalf of the specified users. In this configuration, Exchange Server requires Send As permissions to send the email message. I did some Googling and came up with some suggestions but nothing definite. Jan 15, 2025 · Hotmail account in Outlook 365 - This message could not be sent. Jan 3, 2024 · We created a new shared mailbox in Exchange Online and assigned users Full Access and Send As rights. " 4 Spice ups da-schmoo (Da_Schmoo) January 24, 2022, 8:51pm 2 Jun 24, 2025 · You do not have the permission to send the message on behalf of the specified user" As a work around, on the email I can select 'From" > Other Email Address > From > then select my name (attached to the same email address I'm unable to send with) Jan 6, 2025 · However I have the most straight forward setup, where I have configured my own account on licensed Outlook from Office 365. Hey all, I'm still kind of a newb to 365 so please bear with me. Jun 21, 2021 · "This message could not be sent. " So, let's fix this. We read them all and were still getting (despite checking and re-checking permissions): This message could not be sent. Doing this with some other dist lists and they work OK. Sep 23, 2025 · I cannot send emails from my newly installed outlook classic. You have Full Access permission on a shared mailbox but while sending emails using shared mailbox email address, you get error: You don't have permission to send messages from this mailbox. Yesterday microsoft called me and assisted me to resolved the issue by creating an additional outlook profile since they indicated the existing profile was corrupted. Mar 1, 2025 · You can vote on whether it's helpful, but you can't add comments or replies or follow the question. Address Book isn’t Updated The address book is necessary for granting send on behalf permission. It’s one of four mailboxes attached to their Outlook profile (a mix of 36… Jul 25, 2022 · You do not have the permission to send the message on behalf of the specified user. I get : This message could not be sent. However, if you add the send-as permission manually in both environments Jul 14, 2023 · The error message "You are not authorized to send mail on behalf of the specified sending account" suggests that there might be permission or configuration issues. Assume that you have a hybrid deployment of on-premises Exchange Server and Exchange Online in Office 365, and that you move a mailbox from the on-premises organization to the Exchange Online organization. I would like to allow some users to ‘send as’ the distribution list. Nov 3, 2025 · Classic Outlook error when sending from Outlook. Outdated or incorrect address books can show errors while sending a message with another email address. First, login as an Exchange (or Global) Administrator of the Office 365 tenant. Describes an issue in which a user can't send mail as another user account by using Outlook in Office 365 even though the user has Send As permission. You do not have the permission to send the message on behalf of the specified user" Jan 2, 2023 · I have set up my 365 Exchange online to allow sending from aliases. I get this message, "You do not have the permission to send the message on behalf of the specified user. Jul 27, 2022 · When user is accepting meeting invite, getting an NDR "You do not have the permission to send the message on behalf of the specified user. In addition, the email has a ton of diagnostic information I don’t believe this is a permissions problem as it works fine if they use the webmail. You do not have the permission to send the message on behalf of the specified user". Apr 5, 2025 · The Office 365 mailbox already has "Full Access" to the exchange mailbox but when sending email on its behalf it is receiving the following error: This message could not be sent. You send an email message from this Outlook profile. When those users send to external email addresses as the shared mailbox, it works. This is an alias from which I am trying to Jan 26, 2016 · I would like to say that it is either working or not working with confidence, however after I tried these two commands on myself, on a shared mailbox that I am not delegated either full access or send as permissions, gave myself a fresh send on behalf permission by using the above command, sending a test email and working. Subject: TEST Sent: 9/26/2018 9:45 AM The following recipient (s) cannot be reached: ' [email protected] ' on 9/26/2018 9:45 AM This message could not be sent. May 27, 2023 · You do not have the permission to send the message on behalf of the specified user. This is irritating when you can’t send emails or don’t have proper permission to send emails on behalf of Jan 31, 2019 · This message could not be sent. To better assist you, Are they resending the email from your user "sent items" folder or shared sent items folder? have they being Apr 21, 2018 · Description: This message could not be sent. Nov 3, 2025 · Classic Outlook error when sending from Outlook. If you don't have Send As permissions for the shared mailbox, Outlook can't send the Jul 11, 2022 · Myname on 12/07/2022 9:02 AM This message could not be sent. To protect privacy, user profiles for migrated questions are anonymized. The same account works fine on Outlook mobile and Outlook on the web. I can also send email from the shared mailbox just fine using the web interface, but not the outlook program on my PC. ” It’s their own mailbox. You configure a Microsoft Outlook profile for the shared mailbox and enter your own credentials to access it. " Dec 13, 2023 · Learn how to fix Outlook error: You do not have the permission to send the message on behalf of the specified user. Nov 28, 2023 · Click on the "Permissions" tab and ensure that you have the correct permissions to send emails on behalf of the specified user. Nov 23, 2017 · However, for a recent new shared mailbox/security group combination, when a user that's member of the related security group wants to send an e-mail from the shared mailbox (by changing the from field in Outlook and selecting the shared mailbox from the global address list), Outlook tries to send every time 'send-on behalf'. You do not have the permission to send the message on behalf of the specified user" Mar 6, 2018 · Describes an issue in which a user can't send mail as another user account by using Outlook in Office 365 even though the user has Send As permission. 5 Spice ups gilnov6030 (gilnov) April 21, 2018, 4:05pm 2 Jan 15, 2025 · Hotmail account in Outlook 365 - This message could not be sent. com Jun 25, 2024 · Have you ever encountered a situation where a delegate with full permissions and SendAs rights on a shared mailbox still couldn’t send emails, receiving bounce-backs stating, “You do not have permission to send the message on behalf of the specified user”? If so, you’re not alone. Yesterday she logged a ticket that she cannot send an email from the shared mailbox, she gets the below error: The following recipient(s) cannot be reached: '{email address}' on 11/02/2020 14:18 This message could not be sent. " Jun 25, 2025 · Describes an issue in Microsoft 365 in which users who have Send As permission to a distribution group receive a non-delivery report when they try to send an email message to other users in Outlook. That’s why at this point, cross Premises Send-As permission is not supported. Sep 26, 2018 · Your message did not reach some or all of the intended recipients. Sep 18, 2025 · This message could not be sent. Jan 27, 2022 · Describes an issue in Microsoft 365 in which users who have Send As permission to a distribution group receive a non-delivery report when they try to send an email message to other users in Outlook. You do not have the permission to send Symptoms Consider the following scenario: You have Full Access and Send On Behalf Of permissions to a shared mailbox in an Exchange Server environment. Jun 25, 2025 · Your message did not reach some or all of the intended recipients. Jun 17, 2024 · Hello, Thank you for reaching out to the Microsoft Community for assistance. I have tried both of the below, but still get undeliverable with ‘you do not have permission to send’ Where am i going wrong please? On-Prem Get-DistributionGroup “Distribution List Name” | Add-ADPermission -User “XYZ Feb 1, 2025 · Suddenly Receiving "This message could not be sent. Send-As permission does not synchronize automatically by Azure Ad Connect between On-premises and Office 365. I can send from an alias on Outlook web, but I cannot from Outlook 365 app. message: This message could not be sent. Apr 14, 2025 · You do not have permission to send the message on behalf of the specified user. We're currently in the process of migrating our entire company over to 365 and are setup with a hybrid environment. " I originally gave myself "Full Access", so that I'd see the account in the Account bar in Outlook, but I learned that - for some strange reason - "Full Access" permission actually does not allow the sending of email (go figure). Jan 15, 2016 · I have setup Delegation of our receptionist Mailbox to her Apprentice. However, Send As will work in most scenarios if you manually add the Send As permissions in both environments. Jun 25, 2025 · Symptoms Consider the following scenario: You have Full Access and Send On Behalf Of permissions to a shared mailbox in an Exchange Server environment. " You do not have the permission to send the message on behalf of the specified user. intermedia. It then goes on to show exchange response headers, an ROP summary, response exceptions and a whole bunch of other items which make no sense to me. Try sending the message again later, or contact your network administrator. xddxo ojov cufmmz djvx rxdozl jpkpey zii fcitykcg slztpy cjkaeh jauo wlzaywnd tyiiq enclldo eyfcwh