AD & DNS: RODC not appear as Name Server?

Why ONLY the writable domain controller (RWDC) appear as “Name Server” in the DNS?

Why Read-only domain controller appears as “Host(A)” in the DNS?

*Note: This is a normal behavior

Reference:

https://social.technet.microsoft.com/wiki/contents/articles/4031.how-read-only-domain-controllers-and-dns-works.aspx

https://awinish.wordpress.com/2011/10/04/rodc-read-only-domain-controller/

https://technet.microsoft.com/en-us/library/cc754956(v=ws.10).aspx

 

Office 365: Enable Litigation Hold

Litigation hold is a feature in Exchange Online (EOP), to hold on a mailbox even license has been removed or user has deleted. There is also duration setting for how long to hold on the mailbox. The mailbox will stick at Microsoft server forever (unlimited duration).

Why litigation hold? To prevent lost of mailbox with accidental deletion, hold for auditing and act as backup. Anyway, easier for audits to audit/inspect the user mailbox. It is indeed recommended to enable this feature.

*Note:

For a user;

  1. Go to > EOP > Recipients > mailbox
    • step1
  2. Select a user
    • step2
  3. Double click to access to properties, and click on mailbox features, scroll down  and find “Litigation hold” (now is Disabled)
    • step3.PNG
  4. Click enable and save
    • step4.PNG
  5. If you wish to set duration of the hold should last, you could enter the specify number of days. (Yes,  they take in as Days)
    • * If you want it to be unlimited then just leave that box blank and click save
    • step5.PNG
  6. After enable the litigation hold, and it will prompt “this will take effect after 60 minutes”

For all user mailboxes;

*Azure Power Shell is required 

  1. Open Azure Power Shell > Connect to Exchange Online
#This command run once (for permission purposes)
Set-ExecutionPolicy Unassigned
$UserCredential = Get-Credential
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection
Import-PSSession $Session

2. Next run the following command to Get only User Mailboxes and enable the litigation hold

a. Unlimited

Get-Mailbox -Filter {RecipientTypeDetails -eq "UserMailbox"} | Set-Mailbox -litigationholdenabled $true

OR

Get-Mailbox -RecipientTypeDetails usermailbox | Set-Mailbox -litigationholdenabled $true

OR

Get-Mailbox -RecipientTypeDetails usermailbox |  where {$_.litigationholdenabled -eq $false} | Set-Mailbox -litigationholdenabled $true

b. With Duration specified

Get-Mailbox -Filter {RecipientTypeDetails -eq "UserMailbox"} | Set-Mailbox -litigationholdenabled $true -litigationholdduration 365

How to check whether litigation is working?

The interface way;

  1. Take a test mailbox with licensed and litigation hold enabled
  2. Remove test license
  3. Wait for half an hour
  4. Go to > EOP > Recipients > Mailbox
  5. At the search box > key in user’s name
  6. Click Refresh icon
  7. You can see that the user mailbox is still there

*Note: At the AD, if you’ve move the user account to another OU which is unsync OU, the user will not appear in the EOP mailbox, instead it will appear as “Deleted mailbox”. This is a normal behaviour. The mailbox is not deleted, it is still attach with the Microsoft server. So don’t worry.

The Power Shell way;

  1. Run this Get Command, to retrieve user mailbox with litigation hold enabled
Get-Mailbox -Filter {RecipientTypeDetails -eq "UserMailbox"} | where {$_.LitigationHoldEnabled -eq $true} | FL

OR

Get-Mailbox -RecipientTypeDetails “UserMailbox” | where {$_.LitigationHoldEnabled -eq $true}

 

References:

  1. https://technet.microsoft.com/en-us/library/jj984289(v=exchg.160).aspx
  2. https://technet.microsoft.com/en-us/library/dn743673(v=exchg.160).aspx

 

Office 365: How to assign license to Specific Users with all service plans included

Tired of assigning license one by one to the user? With this script you can assign to all or only specific users. But first you need to know what are your License ID in the Azure AD.

*Make sure you have the Azure Power Shell installed to your computer

*Scripts below are modifiable 

Here are the steps below;
1. Open Azure Power Shell > Connect to your Office 365 Azure

Connect-MsolService

2. Getting the type of subscriptions

Get-MsolAccountSku

02.PNG

 

3. Now with the view of subscriptions you have on your office 365, you can now identify which subscription you want to enable for your users. To know which subscription is their actual display name, you could compare it on your Office 365 portal > Subscription details

4. For now we will take AccountSkuID: domain:ENTERPRISEPACK (E3 package) as our example;

*Note: This script will only Add License and it wont remove other existing license that had assigned to the user(with multiple license)

a. This is the method of using the csv file to assign license for the user OR convert users from license A to License B, where the csv file contain columns of UPN, UsageLocation and License that you want to enable for your users

#Get .csv file of users
$users = import-csv .\userList.csv -delimiter ","
#Loop
foreach ($user in $users)
{
$upn=$user.EmailAddress
$usagelocation=$user.UsageLocation
$SKU=$user.SKU
Set-MsolUser -UserPrincipalName $upn -UsageLocation $usagelocation
Set-MsolUserLicense -UserPrincipalName $upn -AddLicenses $SKU
}

This is how inside of the csv looks like;

UPN: User principal Name

Usage Location: Location of country

SKU: License type

01.PNG

b. Or if you want unlicensed users to be assign with license, you could run

Get-MsolUser | where {$_.isLicensed -eq $false} | Set-MsolUser -AddLicenses "domain:ENTERPRISEPACK"

5. To know whether the script works, you could try the below type of reassurance;

a. Get Command, to view whether the once unlicensed user now is already licensed is appearing in the unlicensed list

Get-MsolUser | where {$_.isLicensed -eq $false}

b. You could check in the Office 365 portal by creating a custom view > specific license type

c. You could check in the Office 365 portal by choosing > Unlicensed. To view whether the “Just only licensed user” is in the unlicensed list.

 

AD & Office 365: Hard Matching Immutable ID

When do we need to do hard matching? During a migration of users (which already in Office 365) from old domain(AD) to a new domain(AD), and from old AADC to a new AADC.

Why do we need to configure the immutable ID? When a user object is replicated or migrated using ADMT from old domain to new domain, their objectGUID will change and the immutable ID in Office 365 is the old immutable ID from the old domain’s user’s objectGUID. The only impact if you don’t configure the immutable ID, is when you provision the new AADC it will give you an error: “AttributeMustBeUnique”, and will not allow you to sync up to Office 365, until the error has resolved (this part make sure your dirsync duplication feature is true).

What is Immutable ID? Immutable ID is a unique identity(primary key) attribute for Office 365. At the Active Directory, it is called objectGUID. Basically, immutable ID is retrieve from objectGUID. The difference between this ID is their value, objectGUID is converted to a Base64 value for immutable ID.

*To perform hard matching make sure you have Azure module Power Shell installed to your computer. The script given below can be modify if needed.

Here are the steps to successfully complete hard matching;

  1. Disable the directory sync in Office 365
    • Open Azure Power Shell

Connect-MsolService

Set-MsolDirSyncEnabled -EnableDirsync $false

  1. Wait for all users in Office 365 their status change to “in cloud”
    • This takes up 48 hours to 72 hours for the disable to complete
    • *Note: If the specific user’s status is already “in cloud”, don’t have to disable the dirsync.
  2. While waiting for the dirsync to disable, do a ADMT to migrate the user from old domain to the new domain in a target OU.
  3. Next, export csv file with list of users from Office 365 and new domain (user objects): Total csv file: 2
    • Included attributes to export are: User principal name and the object guid (on premise).
    • For O365, just export the user principal name.

#Run this script in the new domain (AD, Windows Power Shell)

#This script is to show user principal name and objectGUID of a user object based on a specific OU

$list = import-csv .\userlist.csv

foreach ($i in $list){

$upn = $i.UPN

$guid = (Get-ADUser -f * {cn -eq $upn} -pr objectguid).objectguid

write-host $guid

}

  1. Copy the objectGUID from the Power Shell and paste into the csv file.
  2. Compare both csv file to eliminate user that is not in the Office 365 csv file.
  3. Finalize the csv file
    • Columns include: user principal name and object guid
  4. Run a power shell to remove the unrelated user from the target OU based on the final csv file (Optional)
    • Reference: https://technet.microsoft.com/en-us/library/ee617206.aspx
  5. Run the following commands to convert the object guid into the new immutable id
  6. Copy and Paste the new immutable id into the finalize csv file
  7. DirSync has completely Disabled, is when the DirSync status in the Office 365 portal is gone.
dirsync
DirSync Status will hide when dirsync has completely disabled

12. At the Azure Power Shell > Remove old immutable id

$users = import-csv .\list.csv -delimiter “,”

foreach ($i in $users)

{

$upn = $i.userprincipalname

Set-MsolUser -userprincipalname $upn -Immutableid “$null”

}

13. Convert the objectGUID to immutable ID

$list = import-csv .\list.csv -delimiter “,”

foreach ($i in $list){
$upn = $i.userprincipalname
$guid = [GUID]$i.objectguid
$bytearray = $guid.tobytearray()
$immutableID = [system.convert]::ToBase64String($bytearray)
write-host $immutableID

}

14. Copy the new immutable id from power shell and paste into the final csv

15. Set new immutable id using the final csv file

$users = import-csv .\list.csv -delimiter “,”

foreach ($i in $users)

{

$upn = $i.userprincipalname

$guid = $i.objectguid

$immutableid = $i.immutableid

Set-MsolUser -userprincipalname $upn -Immutableid $immutableid

}

16. After finishing setting the immutable id,

  • Start back the dirsync

Set-MsolDirSyncEnabled -EnableDirsync $true

17. Run the delta sync at the AADC

Start-ADSyncSyncCycle -PolicyType Delta

18. The End

Reference:

 

Outlook: How to hide “Do Not Forward”

There some customers who are very particular with security and compliance or rights management service. They also would wish to hide all default RMS templates such as, contoso.com – confidential, contoso.com – confidential (View Only) and Do Not Forward, and have their own. Thus, it is easy to hide the contoso.com – confidential and contoso.com – confidential (View Only) templates using the Azure classic portal. However, based on many article I researched on hiding or disable the “Do Not Forward” permission in the Outlook have said “You cannot hide or remove Do Not Forward because it is based on the Office”. So, I came by this article (Reference: https://support.microsoft.com/en-gb/help/2458423/the-message-classification-feature-is-unavailable-when-you-disable-the) to resolve this hiding of “Do Not Forward” feature by modifying the registry of the Office. This method applies to version of Outlook 2010 to Outlook 2016 and can also done via GPO.

Modify using registry;

  1. Open Registry edit (regedit.exe) > HKEY_CURRENT_USER > Software > Microsoft > Office > 16.0 > Common > DRM
  2. Create a new > DWORD(32bit)
  3. Name the registry: DisableDNF
  4. Double click on the registry > enter value ‘1’
  5. Close the registry
  6. Close and relaunch the Outlook

After relaunch the Outlook, you could see whether the given method works is creating a new email > options > permission toggle, the “Do Not Forward” has grey out or disable.

registry
Create a new registry
DisableDNF
Do Not Forward is grey out