Questions tagged [office365]
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133
questions
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21
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Exchange online and zimbra on premise mail server sharing same domain
Am planning to Migrate my Zimbra mail server to Exchange Online but in the meantime, I need to configure some users (30 users) on Exchange Online and the rest on the Zimbra mail server version 8.8.15 (...
patrick stephen
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1
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60
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Postfix relay to Office 365 - DNS configuration
To reduce the likeliness of email being flagged as SPAM, I believe these are the few things that should be done on email servers:
Hostname resolves to a valid IP e.g. mail.example.com to 1.1.1.1
...
- 287
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1
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70
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Is there a way to check the DNS registration date when scanning emails on Office 365?
We've just caught an email spoofing attack on our business, and it's not the first like this. Bad actor registers a DNS name very similar to a company we work with and then sends messages purporting ...
- 229
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1
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80
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Office365: Strip specific email addresses in "To:" field with transport rules
I've setup a transport rule to redirect all messages from [email protected] to [email protected].
The redirection is working fine, but the support system identifies support@...
- 5,520
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45
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Trouble switching accounts on teams devices
Because user licensing for teams devices is deprecated, I need to switch to an Office 365 resource account, licensed with Microsoft Teams Rooms Basic. I've created a resource called 'Teams Meeting ...
-2
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1
answer
251
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Upgrade SMTP Server on Ubuntu Linux 18.04 to support TLS 1.2
Client has an intranet hosted with Apache on Ubuntu 18.04.
When I update an employees information through it, an email is sent, but it fails showing the following error:
(SMTP Error: 421 4.7.66 TLS 1....
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0
answers
34
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I am unable to edit user information on 365 AAD in a Hybrid Environment
Let me start off with, I know that in a Hybrid environment AD edits need to be done on-prem. However, I have a special case that I can't for the life of me figure out.
I have a user that somehow ...
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2
answers
103
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How can I set an Office365 mail archive policy for all mailboxes where mails are older than 5 years and size larger than 50GB
How can I set an O365 mail archive policy for all mailboxes where mails are older than 5 years and size larger than 50GB
I have looked up Office365 admin portal, however can't see any options to ...
- 43
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0
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105
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migrating several accounts from office 365
I need to migrate our mail service from office365 to a local mail server. In the past I did use imapsync to do mail migration but with office and it's ouath2 authentication mecanism I am stuck.
I have ...
- 51
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2
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1k
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Design a compliance content search in O365 to ONLY return a specific person and a specific domain
I am attempting to do a content search through Exchange on O365 to return mail between [email protected] and anyone at outsidedomain.com
I thought that this should work in the KQL:
(ParticipantDomains:...
- 165
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2
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1k
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Office 365 - Forward email to external domain without a mailbox
We have office 365.
We want to forward email addresses from our domain to people outside our domain.
i.e.
[email protected] -> [email protected]
One way I think I can do this is:
...
- 13
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28
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O365 redirect domain on send
Is it possible to redirect emails received to another domain using wildcards?
For example, we wish our client to send faxes to @fax.ourdomain.com and then redirect the fax to @faxservice.com
The ...
- 153
1
vote
1
answer
1k
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New user and recurring events to distribution lists in outlook
We use distribution lists (DL) in our organization for its different groups, and using these DLs we hold weekly meetings, as an Outlook recurring event, to which the appropriate DLs are invited.
...
- 113
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1
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966
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Sendmail - relay to Office 365 [Smart host with non default port]
I need to relay email in sendmail as follows
Host example.mail.protection.outlook.com
Port 2525
No authentication
No SSL
I know I need to set the following in the sendmail.mc file:
define(`...
- 287
1
vote
1
answer
68
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Move Office 365 data to new datacenter
I'm from UAE, we're running Office 365 and while creating the tenant I selected the Europe region because at that time the United Arab Emirates data location was not available, now Microsft has ...
- 11
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1
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186
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Mails from my domain to gmail always in spam
I have a problem,
all mails from my domain (lcs-proprete.fr) to GMAIL users only go to their spam folder.
SPF is ok, DKIM is okay and DMARC is configured as p=none
I disable dkim to be sure that the ...
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1
answer
979
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Office 365 and powershell: is there a way to get the list of devices where the user has signed in
Since we're already in 2022, I'm wondering if there's a Powershell solution for getting a list of devices where the user has installed/activated office 365.The only references I've found seem to ...
- 109
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40
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new-compliancesearcaction delete more than 10 mails
By negligence or mistake from my colleague we need to delete all mails before a specific date. When we do a content search it comes to 5 million emails(many items per mailbox, way more than 10)
Is ...
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2
answers
4k
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Why did this incoming email get through Office 365 spam filters with a DKIM fail? What policy do I need to "tune"?
We use Office 365 mail, I got this spam email this morning so I checked the header to see if there was anything I could do. Here is the header with our receipt domain removed
Received: from ...
- 288
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1
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811
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Office 365 disregards MX record configuration after moving to Google Workspaces
We have recently moved from Office 365 to Google Workspaces. Let's say the domain name is example.com. We let Google switch MX records in the domain management of our provider but did not touch Office ...
- 101
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1
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611
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Outlook / MS Exchange from Office 365 returns 550 header syntax
A client of mine has a case that a partner company is not able to deliver e-mails to them. The case is that they receives following information returned by Mailer-Daemon:
This message was created ...
- 101
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1
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2k
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Powershell to List Sent Items From Shared Mailbox by User
Is it possible to return a list of all items a user sent from Outlook on a given day, which includes mails they sent from a Shared Mailbox using 'Send As'? Ideally I'd like to use PowerShell.
Example:
...
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88
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Script to add email address to Anti-Spam Policy in Office 365
I'm wondering if anyone has come up with a script to add email addresses to the blocked senders list within and Anti-Spam Policy within Office 365 (Security Admin Centre). At the minute, I have to ...
- 35
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2
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124
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Exchange Online Group Calendar entries are not replicated to all members
I created a group in Exchange Online (Microsoft 365 group type) and added a few test members. The target is to have a shared calendar. "Subscribe new members" checkmark is enabled.
All test ...
- 21
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1
answer
1k
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Active Directory Sync: Change user's UPN
How do I reconfigure Azure AD sync, used for making single-sign-on possible for Office365 from inside the domain, so that the domain name part of a user's UPN can change when synchronized?
E.g. assume ...
- 139
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1
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3k
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Windows 2019 and IIS Virtual SMTP Virtual Relay (Office 365)
I have hit a wall with this setup and I cant for the life of me figure this out, despite having setup a few other Virtual SMTP servers in the past. Maybe something has changed in 2019?
I will provide ...
- 11
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1
answer
2k
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Whitelist mailboxes from being blocked from sending emails due to the "User restricted from sending email" alert policy in microsoft365 security?
I have a couple of mailboxes that are periodically being blocked from sending emails due to the "User restricted from sending email" alert policy within the security and compliance center in ...
- 1
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votes
1
answer
565
views
Overwriting existing users in MS 365
I inherited the management of a MS365 (former Office 365) and local Active Directory system. The old server was toast and I created a whole new Active Directory domain on new hardware.
On the new AD ...
- 333
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1
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35
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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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1
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880
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onmicrosoft.com FQDN for Microsoft Learn Sandbox 365 tenant
With Office 365 tenant restrictions in place, access to the Microsoft Learn Sandbox's Office 365 tenant (used by courses such as https://docs.microsoft.com/en-gb/learn/modules/azure-architecture-...
- 905
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3
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173
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Outlook Desktop search contacts To/Cc/Ccn fields during typing
Our company migrate from KerioConnect to Office 365 to better manage
the emails. Lots of people in the company have the same problem, can't
search for contacts when creating a new email and typing in ...
- 101
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1
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727
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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 ...
- 3,725
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2
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7k
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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 ...
2
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0
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966
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Using Office 365 with Linux mail clients
Our company is moving to Office 365.
We would like to provide access to Office 365 from Linux workstations (Ubuntu 18) so that employees can
keep their mails/drafts offline
use a better GUI than the ...
- 21
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1
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626
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How do I automatically in-place archive items in users' Deleted Items folders?
We have an In-Place Archive set up on our Office 365 setup. We would like for our default policy to be to automatically IPA any item, including (and especially) in the Deleted Items folder, after 1 ...
- 11
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3k
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MS Exchange: How to enable SMTP to use OAUTH2.0 but with basic AUTH disabled
(I have asked this question also on stackoverflow but I now think that this might be a more useful community to ask hence I am also posting here.)
I am trying to know whether it is possible to enable ...
1
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1
answer
2k
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Office365 Guest Access to Shared Mailbox
Is it possible for a guest account that exists on 365 to have access to a shared mailbox? Can this be done using B2B collaboration?
I have am unable to find an exact answer from the Microsoft docs on ...
- 595
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1
answer
233
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Force MFA when not hitting conditional access policy
We are using 365 and setting up multifactor authentication.
My thoughts are that users using hybrid Azure AD joined devices already have an additional form of authentication which is the device. And ...
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0
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20
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Office365 Alert Policy for emails with matching header
Is it possible to configure an alert policy in Office365 that would trigger if an email was received that contained a specific header and value pair?
I cannot find anything that indicates this is ...
0
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1
answer
119
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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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1
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595
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How to restrict access to 365 from office apps only?
I'm trying to restrict access to office365 (exchange specifically) from Microsoft office apps only?
I don't want to allow certain users to use native email clients because I want to use application ...
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2
answers
1k
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Delivering smtp mail from postfix to exchange and online exchange problam
I have a very strange problem with one server01 its smtp notifications mail.
My scenario: server01 sends mails over postfix to local on-prem exchange server. That mail is correct with to: address, ...
- 11
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1
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6k
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Sending emails with SMTP Relay on Office 365 via Azure VM
I am trying to resolve the issues around Azure and sending emails via Office 365 SMTP Relay (Connector), but the help online doesn't resolve the problem.
I have a PowerShell System setup on Azure ...
0
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1
answer
122
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DKIM and multiple Email protection Gateways
Just wondering if anyone has ever setup DKIM with multiple email protection gateways
We are running with 365 and a couple of email protection gateways in front
Do you need to add the public key to ...
- 1
1
vote
1
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175
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AAD Hybrid - moving user from different forest while migrating Office 365 mailbox
This is a very specific scenario, hope someone can shed some light.
Assuming we have AAD company.com synched with AD users from contoso.local (contoso.com) and with AD users from business.local (...
- 11
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1
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638
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OneDrive for business data retention post license deactivation
OneDrive for business data retention post license deactivation
My client doesn't want his users to use OneDrive for business.
They want to use Sharepoint on-premise. Unfortunately few of the users ...
- 81
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1
answer
1k
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Can't login with email after joining Windows 10 device to Azure Active Directory
I'm trying to join my company's Windows 10 devices to our Azure Active Directory. I go through the setup wizard detailed here and I don't run into any issues until I attempt to log in to Windows with ...
- 101
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1k
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sharing calendar information exchange online
We have several tenants setup in office 365 from various acquisitions. We wanted users to be able to see each others' calendars across tenants. We followed the docs on inter-tenant collaboration and ...
- 1,106
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2
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1k
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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 ...
- 131
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2
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117
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On-Premise Active Directory to Microsoft 365 Azure AD
We are trying to synchronise our on-premises AD with Azure Active Directory for Microsoft 365. I just want to confirm:
If users on-premises have the same username as their Microsoft 365 username, ...
