8,202 questions with Exchange | Exchange Server | Management tags

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2 answers One of the answers was accepted by the question author.

Creation of shared mailbox failed saying "email address already being used" but this is the only Exchange server for the domain

I recently moved a domain from SimpleLogin to Exchange, and I want to create a shared mailbox for ******@moveddomain.com, but I get an error message saying the email address is already in use so Exchange can't create a shared mailbox. It is true…

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.

8,202 questions
asked 2022-09-05T20:15:45.567+00:00
Wildcat63 21 Reputation points
commented 2026-09-18T03:15:35.1+00:00
Ash9 96 Reputation points
2 answers

Exchange 2010 SBS POP3 Connector

****Exchange 2010 SBS POP3 Connector supports to download and distribute the mail from external pop3 mail servers. I have queries below. I am looking for answers from Technical Members.** 1. What is the new version in Exchange SBS. 2. The new version of…

Exchange Online
Exchange Online

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

7,407 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.

8,202 questions
Windows for business | Windows Server | Devices and deployment | Set up, install, or upgrade
asked 2021-01-22T12:29:23.807+00:00
Amjed Ali 1 Reputation point
answered 2026-09-18T00:03:21.1666667+00:00
1 answer

Sender Based Routing Exchange

Good afternoon group, thanks in advance for your answers, how do I create a custom dll to use in exchange 2019 so that the option to use the correct send connector according to the sender, assuming I have 2 or more email domains, can be done effectively…

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.

8,202 questions
asked 2022-11-13T19:09:55.273+00:00
José Briceno 1 Reputation point
answered 2026-09-18T00:02:35.1933333+00:00
2 answers One of the answers was accepted by the question author.

Microsoft Exchange Server Subscription Edition (SE) CU

Hi All, I am using Exchange Server Edition (SE) Hybrid Environment. All users are created in onprem and migrated to online. I am currently running Microsoft Exchange Server Subscription Edition (SE) RTM with the February 2026 Security Update (Feb26SU).…

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.

8,202 questions
asked 2026-09-15T13:22:58.79+00:00
Glenn Maxwell 14,206 Reputation points
accepted 2026-09-17T07:31:07.48+00:00
Glenn Maxwell 14,206 Reputation points
1 answer

Administrator access

I am the administrator of the account but cannot gain access

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.

8,202 questions
asked 2026-09-14T13:04:11.6533333+00:00
Pierre Desmidt 0 Reputation points
answered 2026-09-14T14:06:04.77+00:00
Heimerdinger 385 Reputation points Independent Advisor
1 answer

Monitoring Queues and Delivery Issues

Hi All, I have four Exchange servers in a DAG: exch01.mydomain.com exch02.mydomain.com exch03.mydomain.com exch04.mydomain.com I have placed exch01.mydomain.com into maintenance mode. I would like to monitor the Exchange environment to make sure…

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.

8,202 questions
asked 2026-09-12T00:48:01.06+00:00
Glenn Maxwell 14,206 Reputation points
commented 2026-09-13T23:39:24.16+00:00
Teddie Dang 1,270 Reputation points Independent Advisor
2 answers

Inbound Email Delivery Failure from a Specific Vendor Domain Despite Delisting

mail server is currently failing to receive inbound emails from a specific vendor (vendor1.com), while emails from all other external vendors and clients arrive without issues. The sender domain was previously blacklisted/blocked, but it has since been…

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.

8,202 questions
asked 2026-09-11T03:06:48.04+00:00
Ericksanders Lesmana 0 Reputation points
commented 2026-09-13T23:15:58.0333333+00:00
Jade Ng 15,490 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.

8,202 questions
asked 2025-11-29T12:38:48.89+00:00
Dimitris Mastroyiannis 5 Reputation points
commented 2026-09-12T00:45:59.76+00:00
PJ Kim 0 Reputation points
1 answer

Add owner to distribution list

I own several distribution lists and would like to add an additional owner; however, when I try to do so, I keep receiving an error message.

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.

8,202 questions
asked 2026-08-18T19:55:44.1266667+00:00
SCARBOROUGH, Helen 0 Reputation points
edited an answer 2026-09-11T01:25:48.3533333+00:00
Hendrix 1,255 Reputation points Independent Advisor
1 answer

exchange 2019 Owa null reference error

I am running exchange 2019 Cu14 with software Update 1 when access OWA it ask sign in authorization username and password after enter it got OWA null reference error and in event there are lot of event with event id 1309 Exception information:     …

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.

8,202 questions
asked 2026-09-08T17:49:57.9766667+00:00
Mohammed Rafeeq uddin 0 Reputation points
commented 2026-09-09T22:47:26.93+00:00
Chris-D 1,515 Reputation points Independent Advisor
13 answers One of the answers was accepted by the question author.

After KB5004778 update, unable to access OWA & ECP (http code 500)

Exchange 2013 CU23 After login to OWA or ECP, I encountered http code 500. Before that, I was updated security update KB5004778 (after a few failed attempts). I followed "OWA or ECP stops working after you install a security…

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.

8,202 questions
asked 2021-07-18T01:59:12.187+00:00
EM Support 41 Reputation points
answered 2026-09-08T18:51:48.73+00:00
Ceyhun KIRMIZITAS 0 Reputation points Microsoft External Staff
2 answers

We're unable to complete your request server_error: The contextID supplied in the request did not have a matching cookie

Hi, good morning! I was trying to create an account using my name, for example he typed anthonyhello? Clicked next button, then my email is not accepting the question mark, so I try to type it now, he typed ******@outlook.com, I need to create my…

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.

8,202 questions
asked 2023-02-05T15:35:34.4+00:00
Anthony Hello 30 Reputation points
commented 2026-09-01T14:01:48.99+00:00
Madhu Kumar 0 Reputation points
1 answer

Email being spoofed Exchange 2019

Exchange 2019. I have an email coming in that appears to be from ******@contoso.com. When you hit reply, the email address is now ******@phisherson.com. In the email itself, you click the ******@contoso.com email address, it shows up as that user's email…

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.

8,202 questions
asked 2026-08-25T16:35:20.56+00:00
Susan Dodds 421 Reputation points
commented 2026-08-26T21:01:01.7466667+00:00
Chris-D 1,515 Reputation points Independent Advisor
1 answer

Exchange 2019 CU14: Server-side search is very slow or fails after mailbox migration from Exchange 2013

Hello, We are troubleshooting a server-side search performance issue after migrating mailboxes from Exchange 2013 to Exchange 2019. Environment Exchange 2013 CU23 still exists in coexistence. Exchange 2019 CU14, build 15.2.1544.36. Two Exchange 2019…

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.

8,202 questions
asked 2026-08-25T10:06:36.0566667+00:00
Vad4 0 Reputation points
edited the question 2026-08-25T17:52:10.4333333+00:00
Vad4 0 Reputation points
6 answers One of the answers was accepted by the question author.

automapping for security group

Hi, As it said on Shared mailboxes in Exchange Online page "Users who are members of the security group will be granted the permissions to the mailbox". Ok, but automapping doesn't work for security group, so it's partially useless. …

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.

8,202 questions
asked 2022-06-27T12:56:03.48+00:00
Fugazi 21 Reputation points
answered 2026-08-24T08:54:20.6466667+00:00
Tenvero 0 Reputation points
2 answers One of the answers was accepted by the question author.

How to Authenticate Exchange Server(On-Premise) with CBA using java8

Hi everyone, We are currently migrating from Exchange Online to Exchange On-Prem and want to implement pure Certificate-Based Authentication (CBA). Following the official Microsoft documentation…

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.

8,202 questions
asked 2025-10-09T08:01:34.2+00:00
Gourav Kumar 60 Reputation points
edited a comment 2026-08-19T08:10:32.66+00:00
Gourav Kumar 0 Reputation points
2 answers One of the answers was accepted by the question author.

Exchange 2019 Certificate Request not generating TXT file

Exchange 2019 Cu14. Not getting the text file for my certificate request to send to the CA. Pending request is showing up in the EAC but can't do more with it in the EAC in Cu14. Folder is shared and allows access to Exchange Trusted…

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.

8,202 questions
asked 2026-08-15T11:38:33.8366667+00:00
Susan Dodds 421 Reputation points
accepted 2026-08-15T11:49:34.05+00:00
Susan Dodds 421 Reputation points
2 answers

Renewing SSL on Exchange 2019

I have a godaddy SSL. I'm doing my first renewal of the certificate. Do I need to do a certificate request from the Exchange server to make the certificate or can I use the one that godaddy made for me without a certificate request? The SSL I'm replacing…

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.

8,202 questions
asked 2026-08-14T03:14:20.8433333+00:00
Susan Dodds 421 Reputation points
edited an answer 2026-08-14T04:02:02.02+00:00
Dora-T 1,050 Reputation points Independent Advisor
1 answer

Hosted outlook mailbox keeps getting full,

Hello all , i have a one user who have 2 mail boxes , and one of the mail box keeps getting Full all the time , so far we did 5 times to do auto-archive , not affecting , we remove the profile and add one more time , not affecting , we generate a…

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.

8,202 questions
asked 2026-08-12T19:52:04.4133333+00:00
Yogesh Zanzibarwala 0 Reputation points
edited an answer 2026-08-12T20:19:24.2433333+00:00
Ivory 1,415 Reputation points Independent Advisor
1 answer

Exchange server SE issue, single email received mutiple times

hi we have just upgraded to Exchange Sever SE from Exchange server 2019 we are facing an issue regarding the single email received multiple time for some users. header shows the different Message_ID for email with same subject. we have recently installed…

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.

8,202 questions
asked 2026-08-03T09:28:08.0066667+00:00
Usman 0 Reputation points
edited an answer 2026-08-10T04:13:04.28+00:00
Kien 1,625 Reputation points Independent Advisor