You Do Not Have Permission To Send The Message On Behalf Of The Specified User Office 365. Outlook for Windows. Subject: Test 5:44pm Sent: 25/06/2025 Hello, Wo

Outlook for Windows. Subject: Test 5:44pm Sent: 25/06/2025 Hello, Wondering if someone has come across this before One of our users is trying to use the Actions -> Resend this message. Yesterday microsoft called me and assisted me to resolved the issue by creating an additional 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: 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 Why am I suddenly getting this message in Outlook? How do I fix it? Please help. How to grant the Send On Behalf permission How to Send On Behalf of another user in Outlook or OWA Send On Behalf Permissions 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:" You do not have the permission to send the message on behalf of the specified user. . The difference is mainly in how you want to handle the messages 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 You do not have the permission to send the message on behalf of the specified user". Your message did not reach some or all of the intended recipients. com account you are sending from is in an Outlook profile with a Microsoft 365 account, and that account has an Exchange Online mail contact with the Learn how to fix Outlook error: You do not have the permission to send the message on behalf of the specified user. Outlook for In on-premises Exchange Server and Microsoft 365 (Exchange Online), you can grant users permission to send e-mails on behalf of another user or mailbox. For Send As, it doesn't matter that much what kind of object you have, as long as you have the necessary permissions. We're currently in the process of migrating our entire 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 send on behalf: the send on behalf permission lets a user send email on behalf of the shared mailbox. Learn effective solutions to fix this issue. Discover how to resolve issues with sending emails from a shared mailbox in Microsoft 365. When those users send to You can work around the issue by removing the M365 account Address Book so that Outlook does not check it when you send an email. feature for a Shared mailbox They have full access . Learn about hidden Global Address List settings and steps to ensure SendAs permissions work According to your issue, I understand that you have received an error code in Outlook. This issue occurs if the Outlook. You To grant Send On Behalf permissions, you need to add the user as a delegate for your mailbox in Outlook and assign the delegate any level of access. My installation of Outlook has worked without issue for several months and no changes were made "This message could not be sent. Permissions may need to be re-applied 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 Myname on 12/07/2022 9:02 AM This message could not be sent. Hey all, I'm still kind of a newb to 365 so please bear with me. In Microsoft 365 (formerly Office 365), managing permissions and access to shared mailboxes is critical for effective collaboration. In this article, we will show To ensure you can send emails on behalf of a shared mailbox, you must check and verify that your user account has the necessary Send As or Send on Behalf permissions. You do not have the permission to send the message on behalf of the specified user. We will explore its core causes, how Microsoft’s cloud Verify that users still have “Send As” permissions assigned to their accounts via the Microsoft 365 Admin Center or PowerShell commands. Select the Inbox of your Outlook. Select You do not have the permission to send the message on behalf of the specified user. You can work around the issue by removing the M365 account Address Book so that Outlook does not check it when you send an email. for example, if john logs into the shared mailbox reception building 32 and sends an Resolve 'Permission Denied' errors in Outlook when sending emails from shared mailboxes. We created a new shared mailbox in Exchange Online and assigned users Full Access and Send As rights. Users granted SendAs permissions should This comprehensive guide aims to demystify the "You Don’t Have Permission To Send Messages" error in Outlook Web Mail. We glad to assist you this part: As my research, I have found the relevant issue just like yours. com account.

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