Questions tagged [exchange]

Questions about any version of Microsoft Exchange Server or Exchange Online, Microsoft's email and unified communications server product. Because of tight integration with other systems, related questions may overlap with Active Directory, Office 365, and Skype for Business (aka Lync Server or Office Communications Server). Questions about Microsoft Outlook may be a gray area, with Super User as an alternative site to ask on.

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14 views

Exchange. How to forward mail, not save it

We are migrating mail from one of our domains to the exchange (123123.com). We created users in AD, created mailboxes for them and copied mail from Google there. Also the domain was added to accepted. ...
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Office 365 Exchange Public Folder lost SID assignment to security group folder permissions

We installed a new Exchange 2016 server and migrated all the mailboxes from the Exchange 2010 server to it. Then we migrated all the mailboxes and public folders from MSEX2016 to Office 365, and we ...
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Implementing CRM Features in Micrsoft 365 Exchange Online

my Customer wants to migrate from Tobit David to Microsoft 365. Into David he uses an Feature named "Dv Relatations" where incommung and outgooging emails from all Useres are copied into an ...
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36 views

OWA 500 error, ECP works fine

I'm getting a 500 error after logging in to OWA. I enter the credentials on the sign in form, it redirects to the frowny face with error 500. More details just shows my server name and the UTC date/...
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Home Exchange Server (Not Receiving a majority of emails) [closed]

I built a home exchange server and I had to use Dynamic DNS. Don't like it, but not worth paying the install fee for business internet. I have no problem sending emails out with my smtp2go outbound ...
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30 views

Getting statistics from Exchange Online about inbound mails from external domains

I've been asked to see if we can get an idea of how many external mails we receive, and what external domains are the most "active". Basically what's wanted is a report detailing how many ...
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1answer
35 views

Why would an Email be missing recipient email address's in headers?

We have 2 companies working out of the same Remote Desktop environment. Company A uses Office 365 for all emails and Office apps. Company B uses a 3rd party hosted Exchange for sending emails but ...
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44 views

Automate the creation of secondary mailbox in Outlook 2016

I allow myself to do this post in order to have your help. I am currently looking for a solution to automate the addition of a secondary mailbox in Outlook 2016. I saw a lot of stuff including the &...
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12 views

EXCHANGE and MAPI : domain admins not allowed

I can't configure Outlook 2013 with Exchange 2016 as domain admin, it asks me for password, i nter it and reask as well. No problem with users, only with Administrators (Builtin, domain admins...) Is ...
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95 views

Exchange 2016 ActiveSync in Edge Server

Dears, We currently have an Exchange 2016 Edge server located in our DMZ and it is handling all our inbound and outbound emails. I noticed that there is no Activesync service/role inside Edge server. ...
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28 views

Possible to Migrate external mailbox to new exchange installation?

I am looking for a way to migrate an externally hosted Exchange mailbox into a new Exchange installation. The situation is basically this: Current mailbox is hosted on exchange 2016, but I have ...
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45 views

Outlook trying to autodiscover server that no longer exists

Autodiscover seems to have a lot of similar issues, but this one case existing solutions don't seem to help... Has the common "Allow this website to configure server settings?". However, ...
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46 views

how to determine if I have the latest security update or not by powershell?

I'm a beginner to exchange server and powershell, I'm working on Exchange server (on-premise), how can I determine if I have the latest updates, security update, version of windows server (core) and ...
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73 views

Outbound mail not sending (newly-installed Exchange 2019 server)

Overview: We have a demo environment where we have installed Exchange 2019. The Exchange 2019 server is set up in Classic Hybrid mode with centralised mail transport enabled. Inbound emails are ...
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44 views

MS365 + Hybrid Exchange Distribution Group Oddness?

So, one of the companies I work with encountered some chaos in their hybrid MS365 / on-prem deployment. There is a distribution list (we'll call it distlist1@example.com) which is present on both the ...
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41 views

Exchange Online - Reporting on blocked users

There is a feature in Exchange Online which blocks users from being able to send email when they send too many emails in a time period. It usually triggers either when a user sends a load of emails ...
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59 views

Exchange 2016 - Users mail keep being stuck in a Shared Mailbox‘s outbox until someone else uses the Same Shared Mailbox

I have come across a very unique problem that I have yet to find a solution for as even google failed me. When User1 tries to send a mail as the shared Mailbox SharedMailbox@ourdomain.com the mail is ...
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58 views

Exchange 2019 Database Permissions

I have an Exchange 2019 server which is running fine but ideally I would like to run offline defrag on an archive database that is now way bigger than it needs to be after removing a mailbox which, ...
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41 views

Reverse hybrid exchange: concerns with adding new on-prem exchange to existing 365 hosted exchange environmnet

I am curious to know if there are any major gotchas with setting up a 'reverse hybrid' 365 deployment, where all mail flow is already in the cloud with on-prem ad sync already enabled and simply ...
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1answer
92 views

Whitelist internal address on Exchange 365 for "Potentially compromised accounts"

I am receiving the following alert for an internal address: Potentially compromised account. Anomalous sending patterns were detected resulting in the user being restricted from sending mail ...
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1answer
51 views

Change timeout for message review in Exchange Online?

I have set up some phishing/malware policies that will forward emails to me for review. I can then choose to accept or reject the message. It seems to work well. The problem I'm having is that this ...
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46 views

How to setup a daily report of users which are sending more than a defined numer of email outside organization within 24h

I'm trying to create a script and schedule it on exchange in order to have a daily report for users which are sending more than a defined numer of email outside organization within 24h. I found this ...
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40 views

Exchange 2019 - IMAP Sync Failure

I have just deployed a new instance of Exchange 2019. Active Sync works fine (outlook and owa) and mail is processed ingress/egress fine. After enabling the IMAP services and associating the self ...
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49 views

iOS 14.7.1 + Exchange 2019 - Server certificate no longer trusted

After upgrade to iOS 14.7.1 I am no longer able to sync my email/calendar/contacts with company Exchange 2019. Our Exchange uses certificate issued by our enterprise CA and these seem to become ...
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25 views

Exchange Server 2016 - identify full hybrid and/or minimal hybrid using or not

We have 2 Exchange Server 2016. I want to check it if I am using Full Hybrid and / or minimal hybrid in our environment. What should I understand from the following output? get-hybridconfiguration ...
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32 views

Turning off SSL is IIS version 10

We have a server running Windows Server 2016 with IIS 10 installed , hosting a database with a front end website attached to it which displays the data on a TV mounted in the workshop. Problem we are ...
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1answer
50 views

Export Mailbox as PST in Exchange Admin Center

I am trying to export a few mailboxes as .pst files in Microsoft's Exchange Admin Center: https://docs.microsoft.com/en-us/exchange/recipients/mailbox-import-and-export/export-procedures?view=...
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100 views

Empty Email when using MS365 as a mail relay from a Python application

We've got a very weird issue going on here. Take this example email (raw form, sanitized): To: TestList@example.com From: Thomas Ward via TestList <TestList@example.com> Subject: Test Message ...
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1answer
53 views

Mailbox unavailable. The server response was: 5.7.1 Client does not have permissions to send as this sender

I have an issue where a new mailbox in Exchange Online is reporting Mailbox unavailable. The server response was: 5.7.1 Client does not have permissions to send as this sender when sending mail from ...
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1answer
20 views

Deleted emails automatically re-appear in original folders of an Office365 email account

I have an O365 email with problem that I cannot delete email in any folder like Inbox, Sent Item, Deleted, etc... After I delete one or more emails, those deleted emails automatically re-appear at the ...
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49 views

Tag External Emails from NEW external addresses

We work with a giant company that prepends an email tag to every externally originating (to them) email that goes something like: "Warning, this email originated outside your organization - don't ...
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1answer
285 views

CLIUSR certificate expiration

I have an Exchange 2019 DAG and the CLIUSR certificate (clusinfracert) will expire soon. I have extensively researched this and there are very few resources online that address this certificate. ...
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76 views

Exchange 2010 to 2016 (Multi Site)

My scenario: Datacenter #1 — AD Site “A” * -4 ISP internet connections. (Outbound independently) * -2 DCs GC (FSMO) Internal DNS * -2 DNS Servers - External DNS hosted into a DMZ (SPF / MX / PTR ...
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60 views

Exchange 2019 excessive archive size

I recently set up an internal Exchange 2019 server for a few users that we mainly use for testing. There are only 5 accounts on there, and in one case I imported the users entire existing email backup ...
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44 views

I stumbled upon a strange issue where a Exchange Shared mailbox continued moving emails from Inbox to Recoverable Items folder

we have shared mailbox with full access for many people and someone deleted all items in this shared. I run the command Search-MailboxAuditLog -identity BelovedCustomersMailbox -LogonTypes Delegate,...
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111 views

User unable to recieve messages from a specific sender, recipient_status = usermailbox.forwardable.resolver.createrecipientitems.40

I have a new user in an existing tenancy, who is unable to recieve emails from a sending domain external to the tenancy. This has stopped them from being able to recieve a "Welcome to 'accounting ...
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1answer
52 views

Duplicates are being imported into Exchange Mailboxes

I am using the New-MailboxImportRequest to import .PST files into existing mailboxes. These mailboxes have emails in them that are also included in the .PST file being imported. The import request ...
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1answer
56 views

Exchange 2019 ssl certificate invalid

I have installed Exchange 2019 for testing purposes. I have purchased a domain name and a certificate. After I installed it, the status shows: invalid. Thank you. Here is the result of certutil -...
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2answers
89 views

My Exchange generates "Mailbox full" for recipient's mailbox but it isn't full

When I am sending an email to user@example.com then my Exchange Server 2010 [14.01.0438.000] rejects the email with the message that the recipient's mailbox is full. I contacted the company and they ...
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1answer
129 views

Deliver mail to certain MX

We have a strange problem. Our Exchange (old guy Exchange 2010) server doesn't deliver mail to certain address. When checking I see that the domain of recipient has 2 MX records MX 10 good.server MX ...
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1answer
47 views

Exchange Migration without outlook configuration

I am working on migrating some users from Exchange1 and Domain1 users to Exchange2 and Domain2. I am able to migrate their accounts from Domain1 to Domain2 with their current password. No issues. I am ...
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1answer
68 views

Postfix rejects emails relayed from O365

I have to do a migration of Office 365 from Postfix with Sogo. My goal is to configure small hybrid of Office 365 with Postfix, a bit the same way you do with Exchange On-premises. Currently, postfix ...
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1answer
553 views

Send As not Working sending from Outlook Client

Hey i set up a DL in office 365 and added members. I can send emails on behalf of the distribution group and it sends from office 365 but when i go to my outlook client i get an error that i cannot ...
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2answers
75 views

ImapSync between Exchange 2007 and Linux Postfix/Dovecot server

After running imapsync between an Exchange 2007 and a normal postfix/dovecot Linux server (we're in the process of migrating FROM Exchange to an OSS solution), and seeing that the process ran ...
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1answer
564 views

Exchange Full Hybrid - Email to distribution list gives '550 5.5.3 too many recipients' error (cloud to on-premise)

We are in the process of migrating from Exchange 2016 CU19 to Exchange Online. We are running a full hybrid configuration with two on-premise servers in a DAG. So far we have only migrated a small ...
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1answer
43 views

Block MapiOverHttps from external only

We have multiple Exchange 2019 servers that currently still use MapiOverRpc. Connection from the internet (Mapi, ActiveSync, Owa) is through the Reverse Proxy funcitonality of a Sophos UTM gateway (&...
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578 views

Mail loop between spam filter and 365

I was wondering if anyone has seen this before.  We have our own spam filter cluster that emails go through before being sent on to 365.  When emailing from our company domain (365 hosted) to another ...
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2answers
21 views

2nd Exchange Server 2013

I was going to add a 2nd Exchange server to our single forest domain. I set the Windows server up, installed Exchange but never configured anything for it. I have decided not to pursue this. If I ...
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2answers
135 views

Outlook / Exchange connectivity issues over VPN

In our company, we are currently testing whether it would be possible to work from the home office directly via the vpn without having to rely on a virtual computer within the company. This means that ...
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39 views

Exchange seems to have two different Global Address Books. How do I get them back in Sync?

I've got a Hybrid Exchange setup with Office 365, and when I create a brand-new Outlook profile using the Outlook Desktop client, I get a bogus global address book with a bunch of users who left a ...

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