1,633 questions with Exchange | Exchange Server | Other tags

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Outbound mail queues on Exchange Hub Transport spiked to 10k+. Best way to triage the bottleneck?

Morning all. Our outbound mail queues on the primary Exchange Hub Transport server have properly gone pear-shaped—we’ve currently got a backlog sitting at 10,000+ messages and counting. Need to quickly isolate where the bottleneck is before things get…

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.

1,633 questions
asked 2026-07-16T05:58:02.6166667+00:00
OCD77 Ephelios 0 Reputation points
commented 2026-07-17T02:20:59.3933333+00:00
Teddie-D 19,360 Reputation points Microsoft External Staff Moderator
1 answer

Exchange onpremis

Migration für einen Benutzer von Exchange SE zu Exchange Online schlägt mit folgender Meldung fehl: Error: EndpointNotFoundTransientException: The call to/EWS/mrsproxy.svc failed because no service was listening on the specified endpoint. --> There…

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.

1,633 questions
asked 2026-07-15T11:28:45.7133333+00:00
Komossa, Dominic 0 Reputation points
commented 2026-07-16T14:26:20.8033333+00:00
Michelle-N 20,135 Reputation points Microsoft External Staff Moderator
1 answer

Exchange 2016 - OWA opens but email preview pane just shows loading and no other menu options work either

Exchange 2016 - OWA opens but email preview pane just shows loading and no other menu options work either ECP works fine ! What could be the issue ?

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.

1,633 questions
asked 2026-07-11T07:47:04.2433333+00:00
Zameer Minhas 0 Reputation points
commented 2026-07-13T00:23:48.06+00:00
Teddie-D 19,360 Reputation points Microsoft External Staff Moderator
1 answer

Exchange Server SE SMTP STARTTLS reported as using SHA1 for TLS 1.2 key exchange by Internet.nl

We have two Exchange Server SE Edge Transport servers running on Windows Server 2022. Environment: Exchange Server SE 15.2.2562.17 Windows Server 2022 Standard 21H2 OS Build 20348.4647 TLS 1.0 disabled TLS 1.1 disabled TLS 1.2 and TLS 1.3…

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.

1,633 questions
asked 2026-07-03T18:39:58.96+00:00
Johnny Broe 686 Reputation points
commented 2026-07-08T19:47:24.3733333+00:00
Hin-V 16,405 Reputation points Microsoft External Staff Moderator
1 answer

403 Errors when trying to connect to EWS Services from External App

We are getting 403 errors returned by EWS when trying to connect to it. Admin Consent for permissions are properly granted. Apps suddenly stopped working on July 2nd. Below is one of the errors on an app. We do know that EWS is eventually getting…

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.

1,633 questions
asked 2026-07-02T19:46:22.2+00:00
Justin Peguero 0 Reputation points
commented 2026-07-03T22:48:47.0933333+00:00
Hin-V 16,405 Reputation points Microsoft External Staff Moderator
1 answer

Exchange 2019 CU15 On-Prem + ADFS + Outlook 2024 Failed

Hello! We are configuring a pure on-premises Exchange 2019 CU15 environment to use Modern Authentication with a local ADFS server (not Office 365) using this link:…

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.

1,633 questions
asked 2026-07-01T11:16:56.9166667+00:00
User9183 20 Reputation points
commented 2026-07-02T09:09:20.79+00:00
Michelle-N 20,135 Reputation points Microsoft External Staff Moderator
2 answers

How do I get my Outlook mail folders to sync on my iOS Mail App?

I have connected my Exchange email on my iPhone to my iOS Mail app, but most of my user-created email folders are not syncing with my phone. I have tried to configure manually by entering the server name, but get an error message saying it is…

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.

1,633 questions
asked 2025-08-13T22:56:00.9666667+00:00
Linsey Lesly 0 Reputation points
commented 2026-06-30T18:26:44.75+00:00
John Gerhardt 0 Reputation points
1 answer

Query on Distribution Lists

Hi All, We are running an Exchange Server Subscription Edition (SE) hybrid environment. User mailboxes are created on-premises and then migrated to Exchange Online. we have Distribution Lists both in Onprem and Online. I have a distribution list in…

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.

1,633 questions
asked 2026-06-28T23:47:25.14+00:00
Glenn Maxwell 14,066 Reputation points
answered 2026-06-29T03:51:19.9033333+00:00
Teddie-D 19,360 Reputation points Microsoft External Staff Moderator
1 answer

Exchange 2019 CU15 On-Prem + ADFS Modern Auth: Outlook Desktop Client Fails

Hello! We are configuring a pure on-premises Exchange 2019 CU15 environment to use Modern Authentication with a local ADFS server (not Office 365) using this link:…

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.

1,633 questions
asked 2026-06-25T10:34:06.1833333+00:00
Aleksandr Aleksandr 45 Reputation points
commented 2026-06-26T13:48:45.9366667+00:00
Gabriel-N 20,300 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Exchange 2019 CU15 On-Prem + ADFS: Outlook for iOS/Android ActiveSync fails with OAuth/MFA

Hey ! I'm deep into an ADFS integration project for a pure on-premises Exchange 2019 CU15 environment and have hit a wall with ActiveSync and mobile devices. I'm hoping someone here has either a silver bullet or can confirm my suspicion that this is an…

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.

1,633 questions
asked 2026-06-23T08:31:48.23+00:00
Aleksandr Aleksandr 45 Reputation points
commented 2026-06-25T08:20:39.97+00:00
Aleksandr Aleksandr 45 Reputation points
4 answers

Kan ikke sende og motta epost

Hei, dere leverer e-post til: <PII-removed>. Men jeg kan hverken sende eller motta epost.

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.

1,633 questions
asked 2025-12-06T09:28:30.61+00:00
Arne Kvernmo 0 Reputation points
answered 2026-06-19T08:20:20.0166667+00:00
Svein Rygg 0 Reputation points
2 answers

Images are not shown in OWA, but are shown in Outlook for Desktop

Hello, We are experiencing a problem where an image in the body of the mail is not visible in OWA. The image is visible in Outlook for Desktop. The image is being sent by a user within the organization. The issue appears for multiple users, on…

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.

1,633 questions
asked 2026-06-16T08:52:46.19+00:00
DimitarVTomov-0973 5 Reputation points
commented 2026-06-18T14:53:22.3266667+00:00
Michelle-N 20,135 Reputation points Microsoft External Staff Moderator
2 answers

I am looking for pricing for on prem exchange server licensing

I have a client that would like to see the options and pricing for on prem Exchange Server.

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.

1,633 questions
asked 2026-05-29T16:01:39.5666667+00:00
Blake Hanson 0 Reputation points
commented 2026-05-30T22:16:26.57+00:00
Hin-V 16,405 Reputation points Microsoft External Staff Moderator
1 answer

Everyone in organisation not receiving emails and external senders getting error message

People trying to email anyone from our org are receiving this message: Remote server returned '554 5.4.0 < #4.4.1 smtp; The recipient server did not accept our requests to connect. For more information, go to…

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.

1,633 questions
asked 2026-05-21T09:55:27.5533333+00:00
Eleanor Sanders white 0 Reputation points
commented 2026-05-22T11:24:21.28+00:00
Vergil-V 16,720 Reputation points Microsoft External Staff Moderator
2 answers

Read only with outlook exchange

I use Outlook Exchange, and when I open an email, it is read-only. I can't do anything with it. I am also receiving an MS message saying I am using an unlicensed product. I have an MS license through my hosted email server, and I have a 365 License as…

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.

1,633 questions
asked 2026-05-11T03:11:36.6833333+00:00
Keith Eades 0 Reputation points
commented 2026-05-13T02:54:32.79+00:00
Hani-Ng 12,830 Reputation points Microsoft External Staff Moderator
2 answers

Microsoft Exchange not working with my iPhone or iPad.

Been having issues with Microsoft Exchange and my iPhone. For some reason, my phone stopped syncing with the exchange about 7-10 days ago. Apple support said that the Microsoft Exchange was having issues and that they have received a bunch of calls…

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.

1,633 questions
asked 2026-05-08T01:09:47.2666667+00:00
Bob 0 Reputation points
commented 2026-05-11T07:08:10.7233333+00:00
Hani-Ng 12,830 Reputation points Microsoft External Staff Moderator
3 answers

Email Delivery Failure

To the Microsoft Support Team, Good morning. I am writing to express our complete dissatisfaction with the current email blocking situation. We are a long-standing company in the hospitality industry with over 50 years of tradition, and we are currently…

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.

1,633 questions
asked 2026-05-07T11:14:08.7866667+00:00
Ronaldo Gomes Alves 0 Reputation points
commented 2026-05-09T03:38:58.5566667+00:00
Gabriel-N 20,300 Reputation points Microsoft External Staff Moderator
2 answers

How to implement anti-bruteforce protection in front of Exchange server 2019 DAG?

We have the following infrastructure: Microsoft Exchange Server 2019 in a DAG configuration Exchange is located inside a corporate/internal network with no direct Internet access Only gateway/NAT devices can forward ports into the internal network …

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.

1,633 questions
asked 2026-05-02T17:36:15.3666667+00:00
Sergey 45 Reputation points
commented 2026-05-05T22:49:06.89+00:00
Hin-V 16,405 Reputation points Microsoft External Staff Moderator
2 answers One of the answers was accepted by the question author.

Emails from our IP are rejected by Hotmail/Outlook.com – IP not listed on delisting portal

Hello, We are experiencing issues when sending emails from our mail server to Hotmail/Outlook.com addresses. The emails are being rejected, and we suspect our sending IP might be blocked. However, when we check the IP address on the Office 365 Anti-Spam…

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.

1,633 questions
asked 2025-09-14T11:47:12.79+00:00
Bravo Kwambo 25 Reputation points
commented 2026-05-05T11:37:40.0733333+00:00
Dimitrios Chatziamanetoglou 0 Reputation points
2 answers

I cannot send email via my exchange server (ExchaneSE) through mail.protection.outlook.com

I can receive emails with no problems. Here is the shortened exchange log: [Moderator note: personal info removed] 

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.

1,633 questions
asked 2026-04-30T23:37:35.05+00:00
Ross Garmoe 0 Reputation points
edited a comment 2026-05-05T02:33:53.1066667+00:00
Dora-T 15,395 Reputation points Microsoft External Staff Moderator