Questions tagged [exchangeonline]

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

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43 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 ...
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30 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 ...
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29 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 -...
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31 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 ...
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1answer
55 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 ...
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2answers
41 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 = ...
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65 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 ...
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2answers
94 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 ...
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2answers
61 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 ...
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2answers
512 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 ...
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89 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?
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26 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 ...
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124 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 ...
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3answers
230 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 ...
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1answer
174 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 ...
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2answers
407 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 ...
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1answer
161 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 ...
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1answer
642 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 ...
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2answers
360 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? ...
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213 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 ...
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2answers
530 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 ...
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1answer
72 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 ...
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1answer
2k 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 ...
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2answers
461 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$) ...
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2answers
42 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 ...
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1answer
336 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 ...
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2answers
148 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 ...
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2answers
197 views

Minimal Hybrid migration office 365 MX record

We have preformed a minimal hybrid migration. Migrated a few test mailboxes. We have a few 100 to go. At this point can we change our MX record to Office 365? Or, can we only do this at the end?
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119 views

Exchange 2010 to O365 Hybrid - Keep Public Folders changable

The company I am performing an Exchange 2010 to Office 365 migration for has public folders. We planned to perform the migration while the two systems are in hybrid mode, over the course of several ...
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2answers
351 views

OriginatingServer value different in Get-Mailbox and Get-MailboxStatistics

I am currently working in an Office 365 hybrid environment. I did a Get-Mailbox and Get-MailboxStatistics on my own mailbox and discovered that the value of originatingserver is different for each ...
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1answer
445 views

Priority of hidden rules in Outlook/Exchange (2016/2010 respectively)

We have recently moved from a purely Exchange 2010 environment, to a hybrid Exchange 2010/O365 environment and now are using EOP for spam filtering. One user consistently has SCL level 5 tagged e-...
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2answers
983 views

Mail flow from external to on-prem Exchange, through Hybrid O365 remaining in pending

Beating my head against the wall on this one. Used the Hybrid Configuration Wizard to setup a 2010-O365 hybrid setup today, but have had mail pending for hours now trying to figure out what the hold ...
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1answer
3k views

How to query for AutoMapping on 0365 Mailbox using PowerShell

I can enable and remove AutoMapping on a user/mailbox, but how can I query for it using powershell? I've looked for the properties in Get-MailboxPermission, Get-Mailbox or Get-AzureADUser but couldn't ...
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1answer
111 views

Exchange Online: odd mail routing behavior

I'm migrating from Exchange 2010 to Office 365/Exchange Online for a client this weekend. We have setup a Cutover Migration that's been chugging along happily for weeks. Currently, the MX records ...
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2answers
3k views

“Relay Access Denied” error when trying to use Office 365 as mail relay

I redirect outgoing emails in my organization to my postfix MTA. from there, i'm redirecting the mails to office 365 for relaying to the original recipients. For external recipients, I get the ...
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1answer
35 views

Exchange 2013 in AD to Exchange Online with conflicting O365 users

I have been preparing a site that is running Exchange 2013 in a domain(e.g. @domain.local/@domain.org), to have the mailboxes migrated to an Exchange Online setup. The problem I am now realizing is ...
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0answers
35 views

Locating all NDRs without Sent message Exchange Online

In a Hybrid Exchange 2016/EOL environment we have our webserver configured to send mail directly out via our on-premise Exchange server. We had an issue, now resolved, that was blocking the server ...
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1answer
98 views

Mail O365 message trace report to extenal user

I'm using O365's new Security & Compliance portal to create a message trace. I'd like to create an "Enhanced Summary Report" which creates a CSV file and mails the link once created. When I try ...
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1answer
45 views

Exchange Online - Route email to different address depending on sender initials

So our HR department is tiny, and gets an enormous amount of email from our agency at large. They'd like us to forward email to different members of their team, based on the alphabetical order of the ...
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1answer
21 views

Postfix, Exchange Online - Copy specific e-mails to another mailbox received during the night

We used postfix + sieve before, but we migrated to Exchange Online, therefore we need another solution, postfix is still running as a mail gateway. We need to copy e-mails received from a specific e-...
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1answer
840 views

How to enable email relay in Zimbra in same domain, sent from O365

So i have to use a shared domain during migration from Zimbra to O365. MX points to Zimbra, but is also configured to enable outgoin emails from O365 to the world in the same domain. I've configured ...
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1answer
445 views

Can you apply a retention policy to users within a group on O365?

I am attempting to apply a retention policy to users added to a specific group in Office 365, yet I cannot seem to find a way to accomplish this. The closest I have come is the ability to apply the ...
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1answer
220 views

Configuring TLSSendDomainSecureList for Exchange Online with PowerShell

We are replicating an on-premises setup on Office 365. As per https://docs.microsoft.com/en-us/powershell/module/exchange/mail-flow/set-transportconfig?view=exchange-ps the command Set-...
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1answer
1k views

Office 365 Exchange automatically delete deleted items

How would I automatically delete email older than one week in deleted items folder? I have access to the mailbox through OWA. Would this be done using a Rule, Retention Policy or Archiving? Setting ...
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0answers
162 views

Whole company / group calendar invites in O365

What is the best way in Office 365/Exchange Online to create a recurring calendar invite for an entire company, or a particular group, that automatically appears in the calendars of everyone as they ...
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1answer
46 views

100 Users in Exchange Online 365, Can their mailbox storage location be split across two regions?

From my research I believe this is possible with Microsoft's 'Multigeo', but I believe this needs 5000 users, not 100. I do remember there are other ways around this, perhaps multi-tenants but then I'...
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1answer
4k views

How to find source of inherited permission on Exchange online mailbox?

Example: Get-MailboxPermissions -Identity "<user>" Shows permissions with IsInherited=True Where would this permission be inherited from in Exchange online? In on premise exchange I would use ...
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2k views

Office 365 Room delegate emails not being received

We have an Office 365 client that has two Room mailboxes – Boardroom and Training Room. A delegate is assigned to each mailbox to approve/reject Room calendar bookings. When the delegate clicks ...
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1answer
56 views

How do I properly setup a new hybrid exchange server in a new domain and new Office 365 tenant?

Current setup and background We are changing our company name. With that means changing our internal domain name, email addresses and Office 365 tenant. 100% of our mailboxes are in the cloud (...
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1answer
3k views

Identifying source of spam/malware emails apparently from Office 365 user

An office 365 user discovered that around 100 emails were sent apparently from him; they have some kind of malicious PDF attachment. The message headers show "Received: from XXX.XXX.PROD.OUTLOOK.COM" ...