Questions tagged [exchange-2016]

Microsoft Exchange Server 2016 is the latest release of Microsoft's email and calendaring server software.

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In an Exch 2016/EXO hybrid deployment, should a telnet message test on prem be considered internal

I have inherited a hybrid deployment between Exchange 2016 on prem and Exchange online. One of the first things I had to do was turn of centralized message transport, as it was adding two unnecessary ...
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138 views

Exchange 2016 ECP failing - 503 Service Unavailable

My Exchange server is really suffering at the moment. I do not know what has happened but when I connect /ECP I get 503 errors. I can view the login page successfully, but after a successful login all ...
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185 views

Error: Exchange 2016 Unable to install CU19 Update

We have a hybrid Exchange environment that I'm trying to patch up. We're currently running CU16, and I've tried upgrading to both CU18 and CU19 with the same errors. During installation, it makes it ...
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38 views

exchange hybrid, management server do I still need HCW/Agent?

we currently migrated all our mailboxes into the cloud and want to keep one single exchange server (a pretty clean one) after our migration. do we still need the HCW Hybrid Agent or can we remove it ...
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123 views

Exchange 2016 - Huge ClientAccess OWA & Perm Folders

Running an Exchange 2016 server currently with CU19. I have noticed over the years of CU's been applied that the Exchange Server\V15\ClientAccess\OWA folder has grown in size (Currently 9Gb in size, ...
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63 views

Exchange 2016 won't recreate HealthMailboxes for Monitoring

I needed to repair some corrupt Monitoring HealthMailboxes. I've followed the instructions from numerous articles indicating I should stop the Microsoft Exchange Health Manager (and Recovery) ...
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225 views

Found errorEE.aspx Web Shell in Exchange 2016 auth folder

So recently Microsoft published this document: https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/ They mention a web shell called errorEE.aspx and when I checked my ...
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322 views

MS Exchange 2016 CU19 Update Error: The operation failed because UPN value provided for addition/modification is not unique forest-wide

I am trying to update exchange to the latest CU. We have a hybrid setup with O365 and since we barely use the server we have fallen behind on updates. The last time it was updated was before I was ...
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89 views

Outlook 2019 Calendar wont sync updates

I have an issue on some users with Outlook 2019, which Calendar won't sync updates on meeting. Outlook is connected to Microsoft Exchange 2016 On-prem. So, meeting was created by User A, and User B ...
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48 views

Only allowing Limited Set of Anonymous user to relay emails to external address in Exchange Server 2016

My requirement is slightly different from this question : Only allowing authenticated user on host to relay emails to external address in Exchange Server 2013 We are using Exchange-2016 and need to ...
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206 views

Issue with Autodiscover and external mail communication

I've got a problem with the initial configuration of an Exchange Server 2016. Sending/receiving internal emails works but not to/from the oudside. I tested the inbound SMTP mail flow with ...
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102 views

Why mails sent internally, disappear upon arrival? [closed]

I have a problem with internal mail flow. On one shared mailbox I have this issue, that when email is sent to it, some users don't get it. It's Microsoft Exchange Server 2016. I did use Test-Mailflow ...
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1k views

What is the cause of Windows Server Event ID: 15021? [closed]

I have 4 identical Exchange 2016 servers. A little over a month ago, I renewed my wildcard cert on all 4 servers and assigned it to services IIS and SMTP -- on all 4 servers. Today, I noticed that one ...
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424 views

Exchange & Outlook 2019 AutoDiscover Fails

We have an internally hosted Exchange server on the company domain, domain joined clients are able to autodiscover our exchange server with no issues. We have a laptop that will not be joined to the ...
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253 views

Exchange (2016) many mailbox delegations and throttling policies

At a customers site with 20+ employees per team I get an outlook warning message roughly translated to "The amount of elements opened at once has been limited by the server administrator". ...
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175 views

Exchange 2016 locks AD-User

our Exchange Server locks out one AD-User since the User changed the password. He can log in to Windows, starts Outlook and locks the User, every day. We Use the Exchange Server 2016 and the AD is on ...
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64 views

Do new versions of OWA have an equivalent to the About page of OWA in Exchange 2010

Using the Exchange 2010 version of Outlook Web App (OWA) you could click the (?) button and then click About to get a really useful page containing information about the Mailbox server, Proxy server, ...
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201 views

Delaying delivery of emails out of business hours for Exchange

I am having an interesting problem to solve. We want to be able to delay the delivery of certain business emails sent from some managers to their staff after business hours to the next working day. ...
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2answers
458 views

Migrate hybrid Office 365 to new tenant

We currently have a hybrid on-prem/Office 365 environment. Our Exchange is on-prem. Users are synced to an Office 365 tenant using Azure AD Connect so they can use Teams/Sharepoint etc. We want to ...
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132 views

Exchange server redirect email to another smtp

Does anyone know if it's possible to redirect email received to Exchange server 2016 to external SMTP MTA? For example everything received from domain.com to be redirected to encryption gateway. So ...
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200 views

Login Exchange Office 365 in Office 2016 and from PC Active Directory

i have some issue here. i have domain Active Directory xxx.id and domain Office 365 abcd.com in WORKGROUP PC i can login my email Office 365 using Office 2016. and if i login my email from Office 365 ...
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2answers
484 views

Anti-spam whitelisting by sender IP in Exchange 2016 on-prem

I can't seem to find the way to bypass the anti-spam filter by IP address in the Exchange 2016. The goal is to allow POS tills to send automated emails to accounts when the bill is closed. The ...
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3answers
269 views

Exchange 2016 Server Rejecting Certificate as Expired

We have emails sent using TLS from a Windows 2012R2 (non-domain joined) web server in our DMZ to our internal Exchange 2016 server (also running on Windows 2012R2). This was working fine up until ...
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43 views

Exchange 2010/2016 Co-Existence, Secondary Logon Prompt

We're currently running 2010 and 2016 in co-existence and we've migrated our first mailbox, woho! However, on the test user account, the mailbox will not connect to the server, running an auto-...
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884 views

MS Outlook keeps not responding when requesting data from Exchange

Looking for some pointers on this one…. MS Outlook keeps not responding when requesting data from Exchange The setup up… Three locations: one is the head office running Windows 2016 servers (AD ...
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45 views

Why should I renew a cert instead of upload a new one in Exchange

I have a certificate for Exchange 2016 expiring in the next couple months and I have downloaded the new cert. I can go through the steps here to renew the cert but why couldn't I just upload the new ...
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90 views

Exchange 2016 on server 2012r2 port 25 closed

Port 25 won't open anymore since a few days. I don't know what exactly preceded it, maybe server crash or update. /owa and /ecp work and I can also connect with Outlook, but I can't get any mails. I ...
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290 views

Safe to remove dismounted Exchange 2016 mailbox database?

My exchange 2016 has two databases listed. One is showing as healthy and the other is dismounted. I suspect the dismounted one is the remains of a disaster recovery earlier in the year. I want to ...
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44 views

Outlook 2016 folder permission error message

User A has given user B full permission access to a folder in their inbox (user A's inbox). User B has added user A's email account in Account settings. When user B selects the folder name in their ...
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1answer
58 views

Unable to send outbound emails both internal and external on new installation of Exchange 2016

I have installed a WINDOWS 2016 server and Exchange 2016 without EdgeTransport. This is only windows server in our environment so I created a new forest and new local domain.I have gone through ...
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2answers
384 views

Wordpress/Easy WP SMTP Error Sending TLS Secured Mail to Exchange 2016 On-Prem Server

I have a non-domain joined Windows Server 2012R2 web server hosting Wordpress with the Easy WP SMTP plugin in our DMZ. It is supposed to send email to our internal Exchange 2016 server for things ...
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3k views

Microsoft Exchange System Attendant service missing

I had a functioning Exchange 2016 server. Migration between databases was all fine. I installed another Exchange 2016 to replace the old one. Install went fine, all mailboxes were moved but I had to ...
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723 views

Exchange 2010-2016 coexistence: Why does OWA do a 301 redirect before login?

I have an Active Directory domain. We have two on-premises mail servers -- one running Exchange 2010 (exchange2010.example.com) and one running Exchange 2016 (exchange2016.example.com). My goal is to ...
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1answer
89 views

Exchange 2013 DAG - where to place witness server?

We have a setup with two Exchange 2013 servers (EX01 and EX02, every with all roles) in DAG on the single site. DAG is only for failover purposes. I'm planning to move one server to the second ...
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358 views

Migrate Exchange 2010 to Exchange 2016, but do it gradually

We have a small-organization, on-premises Exchange 2010 setup running on Server 2008 R2. Our goal is to migrate to Exchange 2016 running on Server 2016 (I guess -- I would prefer Server 2019, but ...
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2answers
119 views

Is this possible exchange sever 2010 migration to 2016 on this environment?

I need to install Exchange 2016 on new Windows 2016 server and then need to migrate Exchange 2010 to 2016 I have my DC and Exchange 2010 on the server together Here is the image that explains the ...
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1answer
301 views

Exchange 2016 mail flow rule sending email but, ???question marks appear instead of arabic

I have added a rule to block users from sending mail to any outside mail service like Outlook, Gmail,Yahoo, etc. The rule I applied sends an email to the sender, notifying that mail cannot be sent ...
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2answers
235 views

Cannot achieve Exchange Server authentication to 2010 Exchange server from 2016 Exchange server

I am in the process of migration Exchange 2010 to 2016 server. Currently I have installed Exchange 2016 which is co-existing with 2010. I have created a test mailbox on the 2016 server. I am able to ...
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4k views

How to Change an Exchange Certificate and Ensure the Current Services are Covered Properly

I'm currently struggling with understanding how Exchange Certificates are uploaded and managed on servers. I've found the following How to Renew SSL Certificate for Exchange 2013 Server Step by Step ...
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130 views

Configuring port on “Default SMTP Virtual Server” in Exchange 2016

I have an old server running Exchange 2003 on Windows 2003. I'm trying to setup a brand new server running Exchange 2016. There is a massive change between the version and I'm having hard time how to ...
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1answer
404 views

Exchange 2016 ActiveSync error

I'm trying to verify if all Exchange virtual directory are configured properly and running. I try to use Browser to surf https://hostname.company.com/Microsoft-Server-ActiveSync, however it returned ...
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168 views

Exchange 2016 cant access externally

I have setup ms exchange 2016 in my company environment, done configured SSL and setup all virtual directory internal and external url as hostname.company.com, but I still can't land OWA when using ...
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84 views

LOG Space Issues — Figuring Out the Disk Space needed for DAG CopyQueueLength

I have a DAG Database, DAG1, with 300000 CopyQueueLength. The Status for the copy is Failed and Suspended. In researching the problem I found that a reseed is needed for the database to get exchange ...
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2answers
2k views

Search on Exchange not working with EventID 1012: “Service at the endpoint address 'net.pipe://localhost/3867' is unavailable”

Overview We have DAG with two nodes of Exchange 2016 CU12 running on up-to-date Windows Server 2016. Search is failing on any mailbox residing in any database mounted on one of the nodes. Other ...
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1k views

How to check if “Split Permissions” are set for an Exchange Server?

I need to administrate an Exchange Server where some powershell commands don't work (like New-Mailbox). It seems that "Split Permissions" are active on that installation but I'm not sure. How can I ...
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1k views

Why doesn't deleting mailbox items in exchange reflect in available database white space?

In Exchange 2016, I'm currently tasked with retaining ALL email items in Exchange... forever... (a discussion for another time)... To do this, I set all mailboxes to litigation hold to prevent any ...
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624 views

autodiscover with http redirect work with all clients except iOS

I have an exchange 2016 with autodiscover. Mail receive and send works like a charm, autodiscover works too except on iOS clients. If I add the mailbox on outlook 2019 or 2016, the settings are ...
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3k views

No SMTP server defined. Use real server address instead of 127.0.0.1 in your account

We have an in house MS Exchange 2016 server. It has been running well for a few years now. This is happening more and more often. A user gets a kickback stating the email was undeliverable. There ...
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44 views

Restore single Public Folder item from a “Notes” folder

I have a public folder that contains "Notes" type items on my Exchange 2016 server. A user inadvertently deleted one of those notes. Mail type folders have the option to "Recover Deleted items" in ...
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2k views

Need help in figuring out if there is anything wrong with my DNS settings for mail delivery

Having issues with email delivery into outlook.com and hotmail. emails are going into junk mail. Email flow is "Application > Exchange 2016 > Firewall > Office 365 > Mimecast" MX records points to ...