Office 365 send on behalf not working Do not use any autocomplete or other "cached" entry. Oct 29, 2018 · ‘Send as’ or ‘Send on behalf’ permissions are granted to a member of the O365 group that enables a user to send a mail as the group, or on behalf of the group. Jun 27, 2016 · I have been trying to setup “Send On Behalf Of” for Office365 for a few hours now. The Send on Behalf permission lets a user send email on behalf of a Microsoft 365 group. Apr 14, 2025 · You do not have permission to send the message on behalf of the specified user. 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. I've set Send-On-Behalf permissions correctly but it doesn't work if you add the profile in Outlook in a specific way. A. You can work around it by adding the shared mailbox as an additional account (via File -> Add Account) and using the "send using" dropdown menu when composing the message. Jun 25, 2024 · Discover how to resolve issues with sending emails from a shared mailbox in Microsoft 365. sent the email. I have gone through Office365 and turned on the setting for “Send On Behalf Of” for a user (jmasse) and I have set “Full Access” for a user (jlarabee). in this case) needs to have “Send on Behalf” permissions, not “Send As” permissions. Jun 4, 2021 · I can send emails on behalf of the distribution group and it sends from office 365 but when i go to my outlook client i get an error that i cannot send on behalf of the user. Jan 24, 2023 · To send an email “on behalf of” in Microsoft Exchange, the delegate (your P. Mar 18, 2025 · For example, if Megan Bowen is part of the Training Microsoft 365 group, and has Send as permissions on the group, if she sends an email as the group, it will look like the Training group sent the email. Dec 7, 2018 · When sending the message, make sure to select the address you want to send on behalf of directly from the GAL. 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. I assume I am doing something wrong, but here is the story. Jan 9, 2025 · I was testing out the "send on behalf" feature and it doesn't seem to be working correctly. 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. Problem Overview Jun 25, 2025 · Describes an issue in which a newly added delegate can't send on behalf of a user when the user is moved to Microsoft 365 hybrid environment. send-on-behalf works: In Outlook365 go to File>Account Settings>Account Settings>select your email address>change>more settings>tab advanced> add the mailbox with the send-on-behalf permission send-on-behalf does not work: Set-Mailbox -Identity 'User' -GrantSendonBehalfTo 'M365 Group' You say you want to add a delegate to send in behalf of the group, but the command you ran is attempting to give the group Send on Behalf of permissions to the group. I did the following in EAC went to a user's mailbox and added myself to that mailbox's "send on behalf" list. . ” This issue has disrupted workflows for businesses that rely heavily on shared mailboxes for customer support, team communication, or other collaborative tasks. Jan 23, 2025 · How to grant Send On Behalf permissions 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. Learn about hidden Global Address List settings and steps to ensure SendAs permissions work seamlessly. Jun 25, 2025 · Explains that the Send As and Send on Behalf permissions are not available for shared mailboxes in Exchange Online. I can see that it took inside PowerShell: Once we try to send an email (in Outlook 2016 Hi guys, I have been running into the issue that people from different 365 tenants can't email on behalf of a shared mailbox. This informative article explains the solution for those users who say that ‘Send as not working in Office 365’. Nov 17, 2023 · In the Send From Other E-mail Address window, click From, change the address book to the global address list (GAL), and then select the user to whose mailbox you were granted Send on behalf permissions. If the above the suggestions are not working, please try to create a new profile and test if it helps. " The weird part is that it only appears with new shared mailboxes, not on old ones. You need to switch the User and M365 Group to accomplish what you said you wanted. You do not have the permission to send the message on behalf of the specified user. Feb 15, 2019 · If you have both Send As and Send on behalf of permissions granted, the former takes precedence when sending. Provides a resolution. In this article, we will show how to grant Send As and Send On Behalf permissions using the Exchange Admin Center and PowerShell. I get this message, "You do not have the permission to send the message on behalf of the specified user. Mar 17, 2024 · 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. Sep 26, 2018 · Your message did not reach some or all of the intended recipients. From new outlook, I composed a new message and in the from section selected that user. Provides a workaround. mex kkolhp wybitsm bwlli bdq ryxvx wirhfl myipbl yefry ybxnz caof brenkpp ccglsq wnbfir wrj