Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
1 answer
Can't send emails
I can't send emails. Keep getting this message "This message couldn't be delivered because the sending email address was not recognized as a valid sender. The most common reason for this error is that the email address is, or was, suspected of…
Exchange Online
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(300.8, 91%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ES%3C/text%3E%3C/svg%3E)
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(281.6, 34%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERN%3C/text%3E%3C/svg%3E)
1 answer
How to cretae classic distribution list
How to cretae classic distribution list please give me steps tpo cretae
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-08-01T11:23:12.9366667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(99.2, 42%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EP%3C/text%3E%3C/svg%3E)
Priyanka
0
Reputation points
edited an answer 2026-08-01T11:58:31.47+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(54.400000000000006, 68%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EH%3C/text%3E%3C/svg%3E)
Heimerdinger
0
Reputation points
3 answers
Exchange Online: tenant-wide inbound false positives after restricted sender AS(42004) was lifted - how to request reputation remediation?
Our small business tenant had a restricted sender event this week. An internal operational announcement went to our contractor roster in large BCC batches on 7/26-7/27. By 7/29 one licensed user (the account behind our shared mailbox) was placed on…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-31T18:30:56.3233333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(166.4, 9%, 26%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA2%3C/text%3E%3C/svg%3E)
AMSadmin-2204
0
Reputation points
commented 2026-08-01T02:16:26.4766667+00:00
AMSadmin-2204
0
Reputation points
3 answers
Duplicates are being imported
Hello, I am using the New-MailboxImportRequest to import .PST files into existing mailboxes. These mailboxes have emails in them that are also included in the .PST file being imported. The import request completes successfully, some needing the…
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management
The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.
8,192 questions
Exchange | Hybrid management
Exchange | Hybrid management
The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.
2,449 questions
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2021-06-22T01:42:59.563+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(134.4, 62%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EL%3C/text%3E%3C/svg%3E)
LeighHarding
1
Reputation point
answered 2026-07-31T14:31:46.2666667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(278.4, 62%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETM%3C/text%3E%3C/svg%3E)
Ted Mittelstaedt
61
Reputation points
1 answer
Group email not connected
I have a group email I installed via exchange but it is disconnected
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-31T09:44:54.91+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(256, 74%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EOB%3C/text%3E%3C/svg%3E)
Olutosin Bakare (UK)
0
Reputation points
edited a comment 2026-07-31T14:30:21.0366667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(99.2, 83%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELD%3C/text%3E%3C/svg%3E)
Liora D
18,890
Reputation points Microsoft External Staff
Moderator
1 answer
One of the answers was accepted by the question author.
Mail.send API permission
I have a doubt. Granting mail.Send (application) permission to the application object or managed identity (service principal), does it matter anymore. If I directly create a App RBAC policy and restrict the application object or managed identity (Service…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-30T14:45:54.5033333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(144, 42%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDD%3C/text%3E%3C/svg%3E)
Dipronil Dey
25
Reputation points
commented 2026-07-31T06:38:03.6833333+00:00
Vasil Michev
127.4K
Reputation points MVP
Volunteer Moderator
1 answer
One of the answers was accepted by the question author.
Multi Function Printers and SMTP Auth deprecation
We are preparing for the 2025 SMTP Auth deprecation. We have a number of multi-function printers that need to be able to scan and send to external email addresses. According to this…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2024-08-16T18:22:26.14+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(32, 59%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERJ%3C/text%3E%3C/svg%3E)
Rayner, June
65
Reputation points
commented 2026-07-30T22:30:13.1533333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(12.8, 73%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAH%3C/text%3E%3C/svg%3E)
Andreas Hähnel
0
Reputation points
1 answer
New Outlook Shared Mailbox Preview Pane Not Loading for Some Users
We're seeing an issue in New Outlook where some users cannot view email content in the preview pane for certain shared mailboxes. The email list loads normally, but the preview pane is blank. Users can still double-click the email to open it, and the…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-30T16:13:43.2233333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(25.6, 5%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETZ%3C/text%3E%3C/svg%3E)
Thomas Zeigler
0
Reputation points
edited an answer 2026-07-30T18:26:12.9266667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(284.8, 91%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELV%3C/text%3E%3C/svg%3E)
Lia V
8,115
Reputation points Microsoft External Staff
Moderator
1 answer
How to fix 550 550 Administrative prohibition - envelope blocked - [Moderator note: personal info removed]
Hi all, I've got a user on my tenant who has an AD (on-premise) account with an email address being : ******@mydomain.com with an smtp pointing to an external address from another tenant , let's say : ******@external.com. He is a mailUser on exchange…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-30T10:22:31.4+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(60.8, 12%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EB%3C/text%3E%3C/svg%3E)
Baguette_crusher
0
Reputation points
edited an answer 2026-07-30T15:12:58.4333333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(297.6, 94%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJH%3C/text%3E%3C/svg%3E)
Julie Huynh
2,095
Reputation points
Independent Advisor
1 answer
Email Reply Issue
Hi All, I'm experiencing different behavior between Outlook for Mac and Outlook for Windows when replying to emails from an external sender. Scenario: An email is received from an external sender, for example: user1(at)extdomain1.com Outlook for…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-30T00:00:30.4366667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(179.20000000000002, 7.000000000000001%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGM%3C/text%3E%3C/svg%3E)
Glenn Maxwell
14,146
Reputation points
answered 2026-07-30T01:57:01.1833333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(150.4, 1%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDT%3C/text%3E%3C/svg%3E)
Dora-T
15,900
Reputation points Microsoft External Staff
Moderator
2 answers
Exchange Online Application RBAC (Application Mail.Send) is not enforced for Azure Automation Managed Identity when using Microsoft Graph Mail.Send
Issue Summary I have configured Exchange Online Application RBAC to restrict an Azure Automation System Assigned Managed Identity so that it can send emails only from a single mailbox. Although the RBAC configuration is successfully created and…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-20T06:55:18.3833333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(195.2, 97%, 28%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDD%3C/text%3E%3C/svg%3E)
Dey, Dipronil
0
Reputation points
edited the question 2026-07-29T06:01:35.9233333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(0, 92%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGN%3C/text%3E%3C/svg%3E)
Griffith N
0
Reputation points Microsoft External Staff
Moderator
1 answer
I accidentally emptied a local Outlook profile folder from my Mac's trash
"I am a Microsoft 365 Admin. I accidentally emptied a local Outlook profile folder from my Mac's trash, which contained 25 years of critical email data. I need an advanced engineering team to perform a point-in-time mailbox restorationor a…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-23T21:40:36.84+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(57.599999999999994, 71%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESH%3C/text%3E%3C/svg%3E)
Scott Heath
0
Reputation points
commented 2026-07-29T02:34:55.4166667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(124.80000000000001, 50%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDN%3C/text%3E%3C/svg%3E)
Darren-Ng
12,845
Reputation points Microsoft External Staff
Moderator
1 answer
Signing into microsoft exchange
Hello, I'm posting here as a last resort. So I really hope I can get a solution. I've been having trouble signing into my Microsoft Exchange account for about a week. There are no humans to help with microsoft exchange. The only help availavble is if I…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-28T01:37:07.76+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(44.800000000000004, 24%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
Ben Seeger
0
Reputation points
commented 2026-07-29T02:00:58.3966667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(204.8, 1%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJN%3C/text%3E%3C/svg%3E)
Jade Ng
14,315
Reputation points Microsoft External Staff
Moderator
4 answers
"Expired or Invalid pagination request. Default Expiry time is 00:30:00" Error when returning 1000 or more entries with Get-User - Exchange Online Powershell V3 with Certificate Based Authentication
Hello, I'm upgrading my scripts to EXO v3.1.0 due to Microsoft's depreciation of version 2.0.5 at the end of June. Now, I'm running into an error with the below command. $UserList = Get-User -ResultSize unlimited When I use certificate-based…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2023-06-01T16:11:38.1566667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(140.8, 42%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERG%3C/text%3E%3C/svg%3E)
Ryan Graham
15
Reputation points
commented 2026-07-28T18:22:12.4633333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(294.40000000000003, 26%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGJ%3C/text%3E%3C/svg%3E)
Grote, Justin
11
Reputation points
1 answer
Google Workspace migration to Exchange Online worked fine but now it is failing.
I have already successfully migrated several accounts from Google Workspace. I started another migration batch but all users failed with the following error, with user being replace with each email provided in the CVS…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-27T16:25:42.2233333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(208, 5%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECD%3C/text%3E%3C/svg%3E)
Caro de la Torre Hdz
0
Reputation points
commented 2026-07-28T15:37:16.77+00:00
Caro de la Torre Hdz
0
Reputation points
3 answers
One of the answers was accepted by the question author.
Email Migration
Hi All, Our company acquired another organization of approximately 500 users about four months ago. The acquired company currently uses Google Workspace, while our organization uses Microsoft 365 E5. Users currently use both Google Workspace and…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-06-10T04:28:04.6433333+00:00
Glenn Maxwell
14,146
Reputation points
answered 2026-07-28T09:49:40.28+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(185.6, 72%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKS%3C/text%3E%3C/svg%3E)
kanika sharma
0
Reputation points
3 answers
Got a message
I am trying to log set up my calendar in my MacBook and when I try to add the Exchange account I got this message: No auth plugin to verify credentials for account of type com.apple.account.Exchange. What do I do? Best regards Roger
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-10T09:35:55+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(105.60000000000001, 79%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERL%3C/text%3E%3C/svg%3E)
Roger Lindström
10
Reputation points
commented 2026-07-28T02:09:38.1466667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(0, 89%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ENB%3C/text%3E%3C/svg%3E)
Nicolas B
0
Reputation points
1 answer
Outgoing emails are undelivered
I send bulk emails once a week to 50-100 people. These emails are undelivered and I receive the following message. Your message couldn't be delivered. Despite repeated attempts to contact the recipient's email system it didn't respond. Contact the…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-27T22:42:23.08+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(96, 98%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELL%3C/text%3E%3C/svg%3E)
Lerron Little
0
Reputation points
answered 2026-07-27T23:26:09.3266667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(105.60000000000001, 84%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHN%3C/text%3E%3C/svg%3E)
Hani-Ng
13,440
Reputation points Microsoft External Staff
Moderator
2 answers
My organization cannot receive external emails.
My organization cannot receive external emails. We can send emails to external accounts and we can send and receive between our organization. It is the same for both our desktop app and our web version. I believe this is a domain issue as we also cannot…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2026-07-23T19:25:31.23+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(240, 15%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESR%3C/text%3E%3C/svg%3E)
Shannon Robertson
0
Reputation points
commented 2026-07-27T21:29:01.7633333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 98%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKL%3C/text%3E%3C/svg%3E)
Kristen-L
15,650
Reputation points Microsoft External Staff
Moderator
1 answer
IMAP OAuth Regression: "User is authenticated but not connected" after successful token validation
I'm reporting a regression in IMAP OAuth authentication for consumer Outlook.com accounts that started recently. ISSUE SUMMARY: IMAP connections fail immediately after successful OAuth authentication. The server accepts the OAuth token but returns a BAD…
Exchange Online
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
7,335 questions
asked 2025-12-19T22:13:09.1666667+00:00
Dean, Joseph (Cognizant)
20
Reputation points
answered 2026-07-25T21:03:32.74+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(131.20000000000002, 90%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EFM%3C/text%3E%3C/svg%3E)
Ferdinand Mütsch
0
Reputation points