Questions tagged [exchangeonline]

Exchange Online is the hosted version of Microsoft's messaging platform (e.g. Exchange Server).

Filter by
Sorted by
Tagged with
0
votes
1answer
50 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 ...
1
vote
1answer
33 views

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 ...
1
vote
2answers
36 views

Enabling Journaling in Exchange Online

I'm trying to migrate a small company from an ancient, on-premise Linux mail server over to Exchange Online. One of their core requirements is that they need copies of all inbound and outbound e-mail ...
0
votes
1answer
28 views

M365 Exchange Connector Blocklisting

I am writing an Exchange Connector that will send messages from M365 to my app server, which will then relay modified messages back to M365. I understand that without Enhanced Filtering for ...
0
votes
1answer
59 views

Exchange online outbound execution order

I am writing an outbound connector for exchange online but want to understand the order of execution better. This is how I think things would happen but confirmation would be appreciated: Sender ...
0
votes
1answer
54 views

Having Trouble with Exchange Archive Errors - 365 Hybrid

I work in a hybrid 365 environment. Someone made some changes to the archives for users' mailboxes and now I'm getting errors in 365 admin center when I look at an active user:image of error box I was ...
1
vote
2answers
211 views

Cannot find Network Message ID in Message Trace

I'm viewing a message trace from https://admin.exchange.microsoft.com/#/messagetrace If I expand "More Information" on the selected email, I see "Message id". When I go to https:/...
2
votes
1answer
52 views

Hybrid Exchange - 3 step deprovisioning necessary when using archive

The Microsoft documentation for the Disable-RemoteMailbox powershell cmdlet states: Note: If you are deprovisioning a cloud mailbox and its associated online archive, you must first disable the ...
0
votes
2answers
39 views

How can I transfer a cloud mailbox from user A to user B

We use Exchange Online (O365) in our organization. There is a quite huge mailbox (thee digit GB) in our tenant which belogs to an AD object we shall call user A. For reasons which are hard to explain ...
0
votes
1answer
30 views

Synchronize Exchange Online / Outlook data to OnPremise Network

I have Exchange Online and the newest Version of Outlook in my company. For years now we have the following Problem: We have a lot of Users that have multiple mailboxes, shared and personal ones, set ...
0
votes
1answer
2k views

Legitimate emails FilteredAsSpam

Freshdesk is sending emails directly (authenticated via SPF) to Office 365 mailboxes but they are consistently being delivered to the junk folder for all recipients. The following are the ...
0
votes
1answer
31 views

In Exchange Online Protection, one contact became a mailbox. How did this happen?

Today I noticed that I had not received any external mail. I tried mailing myself, but it did not get through to our on-premises mail server. I checked EOP, and there I was in the mail box list. I had ...
0
votes
1answer
28 views

Can I disable spam filtering for one user in Exchange Online Protecttion?

We are using Exchange Online Protection in front of our on-premises mailserver. Is it possible to disable the spam filtering for one user only?
0
votes
2answers
418 views

How long will items be kept in an In-Place Archive with Microsoft's Default MDM Policy?

I did a lot of research to find an answer to this question, but without luck so far. The situation is as follows: Exchange Online with EO Plan 1, E3, and E5 licenses No modifications were done to ...
1
vote
1answer
60 views

Missing Attendance Buttons in Office365 Resource Calendar

There are several cases where when I connect with my admin account to browse the Office 365 Resource Calendar, the attendance buttons are missing from time to time, and I have no clue why. These ...
0
votes
1answer
50 views

How are these spammers getting through?

So we've been a bit of an indirect target of spammers recently... my company has gotten a lot of complaints from customers that they are getting a lot of spam from our sales people. Normally (...
0
votes
1answer
143 views

Change the Exchange Online display name without changing the user display name in MS365

A client who uses Exchange Online asked me today to change the name his recipients see when he sends an email. Instead of just displaying the first and last name, the company name should also become ...
0
votes
1answer
43 views

Sending out of office notification to reply-to

Customers can contact our employees via a contact form on the profile page of each employee. When the form is submitted, the employee receives a notification e-mail. The sender of this e-mail (From) ...
0
votes
1answer
30 views

Spam filtering based on average ascii score

I'm trying to come up with a new spam filter based on what has been coming through our filter lately. A lot of the messages have subject lines like: "Re: ᴢᴀɴᴛᴀᴄ 【ʜᴀs】 ʙᴇᴇɴ ʟɪɴᴋᴇᴅ 【ᴛo】 ᴄᴀɴᴄᴇʀ&...
0
votes
1answer
318 views

Is it possible to display CustomAttributes in Exchange Online

We have migrated from Exchange 2016 to Exchange Online. In the mailbox view in EAC for both 2016 and Online you can Add/remove columns to customize your view. However it seems to be limited in ...
1
vote
3answers
183 views

Exchange Online: ancient auto-reply message hidden somewhere and gets sent alongside current one when auto-reply is enabled

Title says most of it. Have used Get-MailboxAutoReplyConfiguration in Exchange Online PowerShell and it only shows the current auto-reply message. But when auto-reply is enabled, one from a few years ...
0
votes
2answers
1k views

How to completely re-create user mailbox in exchange online?

I am facing a problem when a migration process from GSuite led to an unconsistent user's mailbox - migration process stopped several times and finally hit mailbox size limit (100Gb) which is much more ...
0
votes
1answer
60 views

Apply Disclaimer/Warning for Messages sent to Old Domain

We're on Office 365/Exchange Online. We just completed a domain move from domain-old.edu to domain-new.edu. The .EDU TLD exclusive registrar (EDUCAUSE) is pretty strict about how long you can have two ...
0
votes
1answer
787 views

Can't receive email from certain office 365 organizations - untrusted root

I have a 2013 exchange server on premises. Two different domains domain1.com domain2.org. They are both validated and whether you send to domain1 or 2 , email gets delivered. Barracuda is in front of ...
0
votes
1answer
222 views

Exchange Online - List-Unsubscribe

I am trying to achieve having List-Unsubscribe header functionality for our marketing emails that are being sent using Distribution list. 3rd party mailing is a no-go. I have opened a case with M365 ...
0
votes
1answer
37 views

Is there a way to use impersonation on a specific folder (e.g., calendar) instead of the whole user mailbox?

Is there a way to use Impersonation on a specific folder (e.g., calendar) instead of the whole user mailbox ? I know we can create and narrow down a ManagementScope such as: New-ManagementScope -...
0
votes
1answer
982 views

Exchange OnLine / Office 365 / OWA - Cannot see PDF previews and cannot download attachments

This is a problem from a customer. When he opens an email with a PDF attachment in OWA, the mail opens with no problems, but clicking on the attachment will show an error or a white box. Clicking the ...
0
votes
1answer
858 views

Unable to forward messages from outlook to gmail

https://docs.microsoft.com/en-us/exchange/recipients/user-mailboxes/email-forwarding?view=exchserver-2019 I referred the above tutorial to setup email forwarding in exchange. It was working fine when ...
1
vote
2answers
229 views

Connecting to BOTH Compliance and Exchange online in Powershell using Modern Auth

In the world of basic authentication, I used to connect to MSOL, Compliance and Exchange in a series that went like this: function ConnectToCloud() { $CloudCredentials = ...
0
votes
1answer
364 views

Exchange Online Powershell Set-HostedContentFilterPolicy - A positional parameter cannot be found that accepts argument 'â€BlockedSenders

I have a custom powershell script that connects to Exchange Online and tries to add spam email addresses & domains to the custom Content Filter Policy. The script is: # Blocks Spammers - Email ...
0
votes
2answers
1k views

Adding cloud/external email to allowed senders for AD synced distribution list

We have our AD synced to Office 365 and I want to control who can send to a particular synced distribution group (usually done through Exchange Admin Centre, Delivery Management) which I believe is ...
0
votes
2answers
352 views

How to restore mail flow after Office 365 mailbox user was automatically restricted?

Recently had an Office 365 account compromised from a phishing website, which then sent out a mass-mail. Their email otherwise continued to function. Seeing the spam mail, I blocked the phishing site ...
2
votes
2answers
3k views

Connecting to exchange online with Powershell (Winrm)

After playing with the Microsoft Azure MDM Baselines I got blocked from using the Powershell for Exchange Online module . I have removed myself one time, and after some reboots and some quick config ...
1
vote
2answers
102 views

Is Connect-ExchangeOnline cmdlet uses basic auth?

Am trying to connect Exchange Online using Connect-ExchangeOnline. But, it seems require basic authentication. Is it possible to use this cmdlet without basic auth?
0
votes
1answer
27 views

Is it possible to reconnect a calendar to an active mailbox in exchange online?

Since last accessing the mailbox (16th january), a user noticed his calendar ("agenda" because it is in dutch) can now be "removed" (which you cannot do with the main calendar), and has a new default ...
0
votes
2answers
566 views

Can I redirect all of the NDRs for my domain to a central mailbox in Exchange Online?

At my company our ticketing system pulls from dedicated mailboxes, but when an email is sent from one of them due to some automated process or other and fails it of course throws an NDR. The problem ...
0
votes
3answers
385 views

maibox restore can't locate source mailbox

I've been banging my head and searching for answers for this for about a day and a half now. Is there something I'm doing wrong? Both mailboxes are shared mailboxes, one is soft deleted the other is ...
0
votes
1answer
551 views

Unable to use Exchange online in Chrome to apply changes. keeps showing critical error

I've searched for similar problems and still can't find one solution. This issue started yesterday, then I got an update this morning from chrome. I was thinking the update would solve the problem ...
0
votes
2answers
1k views

Convert Azure AD User to Exchange Online MailUser

I have an Azure AD user (bob@contoso.com) and want to redirect all this users email to an external address (bob@external.com). I have set up other redirects by creating a new MailUser and setting the ...
1
vote
2answers
242 views

Exchange crashed, backups failed, only mail is on my mobile (andriod) device, is it possible to move that data to Exchange Online?

Bad weekend... I had a piece of hardware fail which spiked the power and took out my UPS which dropped my SAN and subsequently killed my Exchange 2010 server. Then I found out that the Veeam backups ...
0
votes
1answer
1k views

365 - Mail-enabled public folder not visible in EAC, Outlook, or Get-PublicFolder. BUT visible to Get-MailPublicFolder

I'm encountering a strange Exchange issue I haven't been able to figure out. Exchange Online (Office 365). Originally was an Exchange 2010 environment, migrated via O365 Hybrid Config, hybrid has ...
1
vote
2answers
1k views

How to select fields from a Powershell System.Object - Exchange Online PowerShell

Question: I have an apparently simple PowerShell System Object that I am having a hard time selecting data from. Can somebody please help explain how I can select / expand the fields in this object? ...
0
votes
2answers
455 views

Exchange Online Hybrid Public Mail Folder not found

We are currently running Exchange 2016 on premises with modern public folders. We are migrating to Exchange Online using a full hybrid configuration since the migration will take a few weeks. I am ...
2
votes
2answers
1k views

Is Exchange Online with Outlook 2016 “push” or “fetch/pull/poll”?

I've tried some googling with mixed results. It looks like IMAP natively is not push but there is a "push-IMAP" draft? What does Exhcange Online use? Essentially I just want to know if using ...
0
votes
1answer
155 views

create a connector to a smarthost that requires authentication on exchange online

Can you create a connector to a smarthost that requires authentication on Exchange Online? I looked at the documentation for New-OutboundConnector, and I don't see a place to set the authentication ...
2
votes
2answers
4k views

moving to Online Archive (in-place Archive) with powershell

I'm trying to move the content of one folder in Exchange Online to the 'In-Place Archive'. As I have to do this for different folder for different users I was thinking of doing it with Powershell ...
0
votes
2answers
733 views

Outlook Simplified Account Creation wizard doesn't perform autodiscover look up

I was migrating users from Google G-Suite (Google Apps) to Office 365 Exchange Online using the following scenario: Keep MX records at Google for coexistence (accounts co-exist at both Google and M$) ...
1
vote
2answers
44 views

Updating Group objects directly in Office 365 Portal instead of On-Premises Active Directory

Recently, I found a new job which uses O365 in a hybrid environment. Just to explain a bit, the new environment has On-premises Active Directory plus an instance of On-premises Exchange Server (which ...
4
votes
1answer
672 views

Powershell commands applicable to Exchange Online in O365 Hybrid Environment

I have been happily using Powershell to automate a lot of admin task in an Exchange 2010 On-premises environment. Recently, I found a new job which uses O365 in a hybrid environment. Just to ...
1
vote
2answers
274 views

Minimal Hybrid migration office 365 3rd party mail filter

We have preformed a minimal hybrid migration. Migrated a few test mailboxes. We have a few 100 to go. We would like to ensure that our 3rd party email spam filter is used for onprem mailboxes and ...