15,941 questions with Exchange-related tags

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Unable to see Calendar for Online Archive

After applying a retention policy configured to move the entire mailbox content older than 2 years to the In‑Place Archive, all items were archived as expected. As a result: Older calendar appointments are no longer visible in the primary mailbox…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-12T11:36:04.3333333+00:00
Amedeo 0 Reputation points
answered 2026-03-12T11:36:23.0433333+00:00
Q&A Assist
1 answer

non ricevo la posta in outlook

non ricevo nè invio e-mail tramite outlook (excenge)

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-11T10:45:26.63+00:00
LORENZO MARAZZITA 0 Reputation points
commented 2026-03-12T10:39:49.6966667+00:00
Jayden-P 17,110 Reputation points Microsoft External Staff Moderator
6 answers

Exchange 2019 onprem: rights problems with Get-ExchangeDiagnosticInfo

According to MS we need to use Get-ExchangeDiagnosticInfo to check Back Pressure. I want to automate that with a script running in task scheduler. Understanding back pressure | Microsoft Learn The user must have one of these roles: Get-ManagementRole…

Exchange | Exchange Server | Other
Exchange | Exchange Server | Other

A robust email, calendaring, and collaboration platform developed by Microsoft, designed for enterprise-level communication and data management.Miscellaneous topics that do not fit into specific categories.

1,603 questions
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.

8,120 questions
asked 2023-06-02T09:07:55.2966667+00:00
TRÖSTER Joachim 6 Reputation points
answered 2026-03-12T10:29:45.7933333+00:00
Андрей Будников 0 Reputation points
2 answers

How to add company name to display name for external mail recipients

I want everyone in the company to have the following rule: Company name should be added to display name for external recipients of emails. I do not want to add this directly to display name in Entra ID, as this will be displayed internally in teams,…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-01-15T11:33:33.4833333+00:00
Andy 0 Reputation points
commented 2026-03-12T08:44:25.1566667+00:00
Andy 0 Reputation points
2 answers

Scan to email problems

Hello, Apologies if this is in the wrong group, but I have recently bought a new MFD which has scan to email which I need to use every day for my business. I have also just migrated over to Office365 and I am trying to set this up, but oh my word.. it…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-09T23:31:04.6333333+00:00
Ekaterina Cuff 0 Reputation points
commented 2026-03-12T04:20:33.1366667+00:00
Vergil-V 10,340 Reputation points Microsoft External Staff Moderator
2 answers

Thunderbird cannot access Outlook email.

I added an Outlook email account to the Thunderbird mail application. However, the following message appears and the inbox remains empty: “The current command did not complete successfully. Server response for account <PII removed>: User is…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-12T02:55:42.2266667+00:00
SAKAI A 0 Reputation points
edited an answer 2026-03-12T03:53:56.1433333+00:00
Teddie-D 12,845 Reputation points Microsoft External Staff Moderator
2 answers

Not receiving emails from my senders

emails from my senders is not cached into my inbox, it sits in the senders mailbox but I have knowledge it sitting there? Moderator note: Moved from Microsoft 365 and Office Others

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-11T20:50:32.09+00:00
Kevin McCallister 0 Reputation points
edited an answer 2026-03-12T00:43:24.3333333+00:00
Matthew-P 11,575 Reputation points Microsoft External Staff Moderator
2 answers

How to restrict specific email addresses, that are in our domain but not in an allowed group from journaling

How to restrict specific email addresses, that are in our domain, but not in an allowed Journal rules group from journaling?

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-10T20:58:14.76+00:00
Andrew Bonser 0 Reputation points
commented 2026-03-12T00:02:48.3133333+00:00
TiNo-T 11,770 Reputation points Microsoft External Staff Moderator
2 answers

I cannot receive nor send emails

I cannot send nor receive emails in my other account, [Moderator note: personal info removed].com.

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-09T06:58:05.3233333+00:00
Lambert Nunez 0 Reputation points
commented 2026-03-11T14:53:03.01+00:00
Hin-V 13,070 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Using on-prem email during mailbox migration to Exchange Online

Can Outlook email and calendar be used during mailbox migration from On-Prem to Exchange Online?

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.

2,409 questions
asked 2026-03-11T14:29:20.06+00:00
Giarla, Steve 0 Reputation points
accepted 2026-03-11T14:42:10.0666667+00:00
Giarla, Steve 0 Reputation points
1 answer

Unable to see Calendar for Online Archive

Hi, We have Hybrid environment, and we have in place online archive enabled for all users. So all users get online archive auto mapped in their outlook. For most of the users if they go to calendar section they get Calendar for both primary mailbox 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.

7,013 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.

2,409 questions
asked 2023-11-03T08:11:21.8133333+00:00
GoodResource 321 Reputation points
edited a comment 2026-03-11T11:50:05.8266667+00:00
Amedeo 0 Reputation points
1 answer One of the answers was accepted by the question author.

Does M365 de-duplicate Outlook email attachements?

Does M365 de-duplicate Outlook email attachments within the same organization?

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-11T09:03:01.7666667+00:00
LEE JOO LEONG 20 Reputation points
accepted 2026-03-11T09:49:53.65+00:00
LEE JOO LEONG 20 Reputation points
3 answers

Spam detection issue in emails sent to Office 365 enterprise customers!!!

Hi, When an email is sent from the [Moderator note: personal info removed] domain to any domain receiving service from Office365, it ends up in the spam folder.  Dmarc, DKIM, SPF, RBL, and PTR were all checked; even after we removed DKIM and Dmarc, the…

Exchange | Other
Exchange | Other

A powerful email and collaboration platform developed by Microsoft, designed to support enterprise-level communication and productivity. Miscellaneous topics that do not fit into specific categories.

897 questions
asked 2026-03-09T09:49:57.26+00:00
Atlas On Line 0 Reputation points
commented 2026-03-11T09:08:51.0166667+00:00
Kudos-Ng 14,515 Reputation points Microsoft External Staff Moderator
2 answers One of the answers was accepted by the question author.

401 Unauthorized errors after enabling Certificate-Based Auth

Since upgrading our on-premises farm to Exchange Server SE and enabling Hybrid Modern Authentication (HMA), we’ve hit a wall with mobile users. While Outlook on the web and Desktop clients authenticate fine using Entra ID, mobile devices using…

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.

8,120 questions
asked 2026-03-10T08:15:20.62+00:00
Burgos Shirnava 80 Reputation points
edited an answer 2026-03-11T08:56:40+00:00
Dora-T 11,125 Reputation points Microsoft External Staff Moderator
1 answer

Remove orphaned Outlook add-in "CRM Notes" – visible as admin-managed but not removable

We have an Outlook add-in ("CRM Notes") that appears as admin-managed in Manage your apps (https://aka.ms/olksideload) and in the Add apps catalog in Outlook on the web. Users cannot remove it (Remove is greyed out). The add-in does not work…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-10T08:15:51.0366667+00:00
Tristan von Stechow 0 Reputation points
commented 2026-03-11T08:48:41.2933333+00:00
Steven-N 21,805 Reputation points Microsoft External Staff Moderator
1 answer

Logged out of MS Teams Calendar

Error message Error Code = Unknown Error Message = Unknown Troubleshooting link = https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/exchange-integration/teams-exchange-interaction-issue

Exchange | Other
Exchange | Other

A powerful email and collaboration platform developed by Microsoft, designed to support enterprise-level communication and productivity. Miscellaneous topics that do not fit into specific categories.

897 questions
asked 2026-03-10T11:20:37.6733333+00:00
Andy Adams 0 Reputation points
commented 2026-03-11T08:23:11.36+00:00
Steven-N 21,805 Reputation points Microsoft External Staff Moderator
2 answers

Emails delivered from certain IP Addresses in M365 get rejected due to SPF fail

Hi Moderators, There have been some cases where emails which are being delivered are rejected. I took a closer look and it seems that the actual IP ranges in spf.protection.outlook.com differs from what was listed on the Microsoft 365 URLs and IP address…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,013 questions
asked 2026-03-10T09:01:15.9833333+00:00
Andy Choo 0 Reputation points
commented 2026-03-11T08:20:26.23+00:00
Steven-N 21,805 Reputation points Microsoft External Staff Moderator
2 answers

Outlook Mobile App authentication error Exchange 2019

Hi, Some of our Exchange 2019 users are experiencing an issue while configuring their Outlook profile on mobile phones. The setup process gets stuck at "Authentication in progress", and they receive a toast notification stating: "An error…

Exchange | Exchange Server | Other
Exchange | Exchange Server | Other

A robust email, calendaring, and collaboration platform developed by Microsoft, designed for enterprise-level communication and data management.Miscellaneous topics that do not fit into specific categories.

1,603 questions
asked 2026-03-02T07:31:10.41+00:00
Ali Raza 0 Reputation points
commented 2026-03-11T08:18:04.5833333+00:00
Steven-N 21,805 Reputation points Microsoft External Staff Moderator
3 answers

How to fix email send out erro 550 5.7.236

Domain user : [Moderator note: personal info removed] .com Send out error Remote server returned "550 5.7.236 Your message can't be sent because your tenant has exceeded its daily limit for

Exchange | Other
Exchange | Other

A powerful email and collaboration platform developed by Microsoft, designed to support enterprise-level communication and productivity. Miscellaneous topics that do not fit into specific categories.

897 questions
asked 2026-02-05T09:23:06.61+00:00
Loh 0 Reputation points
commented 2026-03-11T07:59:02.4166667+00:00
Hin-V 13,070 Reputation points Microsoft External Staff Moderator
2 answers

RE: Need help with a rule to send Outgoing Replies only outside my organization

Hello, I need help drafting the wording for a rule that can be set to trigger a message only for external senders without affecting internal users. I've attached the message I'm receiving when I try to save it only with a message for outside 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.

7,013 questions
asked 2026-03-09T15:52:18.44+00:00
Jean Ann. Powers 0 Reputation points
commented 2026-03-11T03:20:07.3666667+00:00
Hani-Ng 8,720 Reputation points Microsoft External Staff Moderator