8,057 questions with Exchange | Exchange Server | Management tags

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Exchange SE Certificate won’t bind to SMTP

Hi, I’m setting up a new Exchange Server SE in a hybrid environment and ran into an issue with certificates. Situation On the old server, there is an internal CA certificate (Thumbprint AAAA…) that is still enabled for SMTP. On the new server, I imported…

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.
8,057 questions
asked 2025-10-01T21:08:33.49+00:00
Thomas Waschkies 0 Reputation points
edited a comment 2025-12-05T03:22:45.89+00:00
Jade-T 8,355 Reputation points Microsoft External Staff Moderator
3 answers

Exchange Server SE - we can only receive 20MB per mail but everything shows 150MB

We have a problem at a new configured Exchange SE server. Receiving mails with more than 20MB attachments are blocked with error: message size 40243154 exceeds size limit 20000000 of server. But everything seems to be correct…

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.
8,057 questions
asked 2025-12-01T15:15:07.2033333+00:00
Rene Doettl 0 Reputation points
commented 2025-12-05T03:14:26.59+00:00
Kha-N 5,295 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

How to properly configure Exchange Server SE for hybrid modern authentication after upgrading from Exchange 2016?

I’m trying to enable Hybrid Modern Authentication (HMA) after moving my environment from Exchange 2016 to Exchange Server SE, but I’m not fully sure which configuration steps are still required on the SE version. Some guides mention configuring OAuth…

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.
8,057 questions
asked 2025-12-01T09:38:17.82+00:00
Imran Qureshi 200 Reputation points
accepted 2025-12-04T14:27:10.03+00:00
Imran Qureshi 200 Reputation points
2 answers

I'm getting a 'PSSessionOpenFailed' error when trying to connect to the Exchange server using New-PSSession — any idea what might be causing this?

Hi everyone, I would like to know what causes this issue, and how to resolve it? Thank you.

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.
8,057 questions
asked 2025-12-01T06:55:03.02+00:00
Mishael John Calaunan 0 Reputation points
commented 2025-12-04T13:33:50.4933333+00:00
Hin-V 9,950 Reputation points Microsoft External Staff Moderator
4 answers

Exchange 2019 AvailableNewMailboxSpace

Hello! Colleagues, How can I get accurate information about the amount of free space in databases in Exchange Server 2019? I use the command: Get-MailboxDatabase -Status | Sort-Object Name | Format-Table Name, DatabaseSize, AvailableNewMailboxSpace…

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.
8,057 questions
asked 2025-11-26T05:49:25.1333333+00:00
Maxtor007 20 Reputation points
commented 2025-12-04T11:33:22.1433333+00:00
Andy David - MVP 159.7K Reputation points MVP Volunteer Moderator
1 answer

on premise credentials issue

Some of our users while loggin in get this error message, one thing thats common is all of those users have gmail logged in , the issue persists even after logging off from gmail, this problem only occurs on some of the on prem exchange server users.

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.
8,057 questions
asked 2025-12-03T18:32:16.7+00:00
Giri Babu Madhavan 0 Reputation points
edited an answer 2025-12-04T02:16:40.62+00:00
Teddie-D 8,640 Reputation points Microsoft External Staff Moderator
2 answers One of the answers was accepted by the question author.

Using the Microsoft for Google Workspace Migration Addin and only MY user will come over...please help

I'm not sure I have the correct permissions to do this. I have Global Admin rights in Google workspace. In O365 online I have MS business premium and have mapped the google emails to the microsoft emails correctly. Mine came over great, 11k files…

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.
8,057 questions
asked 2025-12-01T23:39:08.68+00:00
Stacey Egerton 20 Reputation points
accepted 2025-12-03T15:27:00.64+00:00
Stacey Egerton 20 Reputation points
1 answer

Teams Calendar Not Working with On-Prem Exchange 2019 After Recent Microsoft License Policy Changes

Hello Community, I’m facing an issue with Microsoft Teams calendar integration and would appreciate some guidance. Environment Details Exchange Server: On-Premises Exchange 2019 CU13 Active Directory: On-Prem Microsoft Teams: Using Teams cloud (no…

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.
8,057 questions
asked 2025-11-26T06:35:24.8233333+00:00
Farhan Aslam 0 Reputation points
commented 2025-12-03T14:24:51.1533333+00:00
Kudos-Ng 10,305 Reputation points Microsoft External Staff Moderator
2 answers

problème avec connections Microsoft exchange Hébergé chez OVH

bonjour, problème avec connections Microsoft exchange Hébergé chez OVH avec Outlook 2021-2024 impossible de connecter les comptes, pouvez-vous m'aider svp

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.
8,057 questions
asked 2025-12-02T09:44:55.58+00:00
Tony Thetis 0 Reputation points
commented 2025-12-03T13:54:17.1433333+00:00
Hin-V 9,950 Reputation points Microsoft External Staff Moderator
1 answer

Exchange servers not seeing DC from remote site

Having Exchange servers deployed in Prod and DR site. AD sites and subnets were configured properly for each site. In AD this is also a parent & child domain setup. there are multiple site links for each domain exists in the forest and what we…

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.
8,057 questions
asked 2025-11-18T10:33:23.13+00:00
Marcus Wong 1,171 Reputation points
commented 2025-12-03T13:34:57.27+00:00
Jack-Bu 5,405 Reputation points Microsoft External Staff Moderator
2 answers

Repeated 'Migration Batch Status' emails

Hi All, I recently batch transferred my emails from a Google business to a Microsoft Exchange plan for my business emails and I am receiving dozens of Migration Batch Status reports daily. There are no active batch processes running and I'm struggling…

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.
8,057 questions
asked 2025-11-29T12:38:48.89+00:00
Dimitris Mastroyiannis 5 Reputation points
commented 2025-12-02T23:35:19.6966667+00:00
Jade-T 8,355 Reputation points Microsoft External Staff Moderator
2 answers

Exchange 2016 to Office 365 Migration

What would you say I’d the best method for 80 odd users the plan is to decom the on prem server post migration does that rule oit remote move migration I know it used to at least I think it did. The last few large scale migrations I have done were all…

Microsoft 365 and Office | Office Online Server
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.
8,057 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.
2,378 questions
asked 2024-04-17T07:36:02.36+00:00
MTS 26 Reputation points
commented 2025-12-02T02:40:01.24+00:00
John P 0 Reputation points
2 answers

Exchange 2016 ECP error NET::ERR_CERT_REVOKED

When trying to access Exchange 2016 ecp getting error NET::ERR_CERT_REVOKED, getting this error all of sudden. The certificate authority haven't done anything. Please suggest on how to fix this.

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.
8,057 questions
asked 2022-07-21T12:40:54.04+00:00
Vignesh 1 Reputation point
answered 2025-12-01T05:51:58.9166667+00:00
Helena David 0 Reputation points
2 answers

Exchange 2016 appers IIS error，HResult -2147024891

我本地已经有一个包含两台Exchange 2016 的环境，并且配置了DAG，已经正常运行了多年， 现在需要在腾讯云上部署一台虚拟机，部署一台Exchange 2016 后将用户数据迁移到这台服务器中，角色安装过程比较顺利，安装完成后我想要去设置虚拟目录/激活等操作 直接提示报错，我尝试重建Microsoft Exchange Server Auth Certificate证书 但是不起作用

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.
8,057 questions
asked 2025-11-25T02:28:38.6766667+00:00
姚黎忠 120 Reputation points
answered 2025-11-30T10:57:31.6733333+00:00
LLLydia 0 Reputation points
5 answers One of the answers was accepted by the question author.

Best Practices for Decommissioning On-Prem Exchange Server After Migration to Exchange Online

We have completed the migration of all our mailboxes to Exchange Online. Currently, we are syncing users from Active Directory to Entra ID through the Entraconnect server. What are the best practices for decommissioning our on-premises Exchange…

Windows for business | Windows Client for IT Pros | Directory services | Active Directory
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.
2,378 questions
Microsoft Security | Microsoft Entra | Microsoft Entra ID
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.
8,057 questions
asked 2025-01-14T22:09:50.5833333+00:00
LULU-6701 341 Reputation points
commented 2025-11-27T13:43:37.28+00:00
EnterpriseArchitect 6,301 Reputation points
3 answers One of the answers was accepted by the question author.

The queue folder should not generate a new mail.que file in Exchange server

I’m facing an issue with my Exchange Server environment and need some help. Both of my Exchange servers (including the DAG member and the primary server) suddenly crashed. After restarting them, I enabled all Exchange services manually. About a month…

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.
8,057 questions
asked 2025-11-26T04:40:18.4+00:00
Sardor Suvonov 20 Reputation points
accepted 2025-11-27T06:16:50.78+00:00
Sardor Suvonov 20 Reputation points
2 answers

log in issues on exhange

i have a personal account with 5 email addresses for my small business, after all was set up, i can't log in anymore. Ive been trying to get tech support from Microsoft but have been a mission. i don't know how resolve the problem to log in into 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.
8,057 questions
asked 2025-11-25T22:38:03.8866667+00:00
Contact UAS 0 Reputation points
commented 2025-11-27T04:41:29.8233333+00:00
Jade-T 8,355 Reputation points Microsoft External Staff Moderator
2 answers One of the answers was accepted by the question author.

After removing a domain from accepted domains how can I get exchange to send externally?

I have a customer with multiple domains. They have recently sold part of their business so I have migrated the emails related to one of the domains (say company1.com) to 365. The DNS is all updated and the emails in 365 are working as expected. I then…

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.
8,057 questions
asked 2025-11-25T13:09:13.0666667+00:00
Lilly Hill 80 Reputation points
commented 2025-11-26T13:32:47.26+00:00
Lilly Hill 80 Reputation points
1 answer One of the answers was accepted by the question author.

Exchange Server SE failing to mount mailbox database after reboot

After a routine reboot the mailbox database refuses to mount. The EAC shows the database in a “Dismounted” state, and when I try to mount it manually, I get the following error: MapiExceptionCallFailed: Unable to mount database. Error 0x80004005 Running…

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.
8,057 questions
asked 2025-11-25T11:34:30.54+00:00
Santiago Cruz 40 Reputation points
commented 2025-11-25T14:51:37.34+00:00
Hin-V 9,950 Reputation points Microsoft External Staff Moderator
2 answers

All my emails are bouncing back with undeliverable email messages

I woke up this morning to NO new emails in my inbox. I found the new emails in the RSS Feed file, along with 14 Microsoft undeliverable email claims from people I don't know. I found that the email rules were changed to reroute the undeliverable messages…

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.
8,057 questions
asked 2025-11-14T21:34:10.6466667+00:00
Diego Amaya 0 Reputation points
commented 2025-11-25T14:07:23.6266667+00:00
Vergil-V 7,220 Reputation points Microsoft External Staff Moderator