From Exchange Management Shell (On Premise): Enable-RemoteMailbox username –RemoteRoutingAddress alias@domain. maxwell" -RemoteRoutingAddress "glenn. Wilfred does not currently have a user account in. By Preamble we are specifically looking at. When mailbox-enabling an existing user, beware of non-supported. mail. net. Enable-RemoteMailbox userID-PrimarySmtpAddress emailID-RemoteRoutingAddress userID @domain. I used Enable-RemoteMailbox like the other users above mentioned, and then Set-RemoteMailbox to add the Exchange GUID, but just running. Once created, you can set the Display. Microsoft Exchange Server subreddit. onmicrosoft. Hi I just want to ask if there's a way to combine script for enable-remotemailbox and change primarySMTP. i have created Account in AD, if i run the below syntax from onprem will the mailbox gets created on cloud. If you use the Enable-RemoteMailbox cmdlet in on. This example assumes that you've already removed the Exchange Online license for the mailbox, and that directory synchronization has been configured. You can also use the Set-Mailbox cmdlet in scripts. Report abuse. Running this on an Exchange 2016 CU2 system. com -Archive If you want to create the archive only. Get-RemoteMailbox emailID. com". Choose a location then click the slider to activate an available license. mail. Enable-RemoteMailbox Script . Topic that contains most common solutions with example project files can be found here. modify the user AD object as seen fit with the activedirectory moduleEnable-RemoteMailbox is a local Exchange server command that merely populates certain Exchange attributes on the user object in the on-premises Active Directory. However, if you feel inconvenient with this parameter, you can use the Prefix parameter to prefix all imported verbs with a certain prefix. onmicrosoft. Next, set the toggle switch to Enabled and click Save ( Fig. Should be able to do it immediately, since it's an AD attribute. com". i have created account in Active Directory. For 2010, we use remote powershell as recommended by Microsoft. . Enable-Distribution. ;Active Roles 7. Here is the script I used recently:. i have created Account in AD, if i run the below syntax from onprem will the mailbox gets created on cloud. com" Microsoft Exchange Online Management Microsoft Exchange Online: A Microsoft email and calendaring hosted service. domain. Enable-RemoteMailbox : The term 'Enable-RemoteMailbox' is not recognized as the name of a cmdlet, function, script file, or operable program. For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax. In the second method you mentioned, can i interchange "Force Dirsync" and "Enable-RemoteMailbox" steps. maxwell@abcd. After running the command, the output gives us the following. mail. No command work on it (as show with the Set-RemoteMailbox), AD Attributes are exactly the same as other meeting rooms, recipient types are correct on Get-Mailbox (cloud) or Get-Remotemailbox: get-remotemailbox HoChiMinhViettelTower_MeetingRoom01 | fl *type* RemoteRecipientType : Migrated, RoomMailbox RecipientType : MailUser Enable-remotemailbox on the AD User (see below) Validate synchronization to Azure; Here are a few notes regarding the usage of enable. If 1 doesn't apply, then you can comment out the last line (Remove-PSSession) with a # so it keeps your session open. Example 2 Disable-RemoteMailbox "David Strome" -Archive. This is useful if the account you typically use doesn't have administrative permissions. onmicrosoft. Reply Jupit0r. 0. com -DomainController server. Building an new ADuser script where it should create a 365 mailbox. The CSV is in format as below: Identity. Enable-RemoteMailbox "user1. Import the CSV file that contains the mailboxes you want to. PS C:> Enable-RemoteMailbox -Identity "Johnny Depp" -PrimarySmtpAddress johnny. Enable-RemoteMailbox documentation, see Example2, seems to suggest the following command should workEnable-RemoteMailbox -Identity fake@fake. mail. The domain name can't contain spaces and it has to have a prefix and a suffix, such as example. Here’s a PowerShell example showing how to grant a user full access to a shared mailbox called ‘Sales’: Add-MailboxPermission -Identity Sales -User D. In the example below we are using the Exchange 2010 MMC to create a new user object and remote mailbox enable the account. At line:1 char:1 [PS] C:Windowssystem32> [PS] C:Windowssystem32>Enable-RemoteMailbox Enable-RemoteMailbox : The term 'Enable-RemoteMailbox' is not recognized as the name of a cmdlet, function, script file, or operable program. Enable-Mailbox -Identity ayla@contoso. Pro Tip: most big companies using Email Naming Policy, to circumvent and stop potential mismatched emails address, use the -PrimarySMTPAddress switch in your. Enable the Remote Mailbox – providing a Remote Routing Address and Primary SMTP Address Set the ExchangeGUID attribute Add each email address Preamble of the Script. Arbitration mailboxes are used for managing approval workflow. You can run Enable-RemoteMailbox against a new AD account as soon as it exists. Set-RemoteMailbox. Use the Set-MailUser cmdlet to modify mail users. onmicrosoft. The mail user is automatically converted to a regular user. The Enable-RemoteMailbox cmdlet mail-enables an existing on-premises user. Next, give Delegate Access permissions for cross-premises. mail. Open the Exchange Management Shell on-prem and run the following cmdlets: Enable-RemoteMailbox user -RemoteRoutingAddress [email protected] cmdlet Enable-RemoteMailbox active une boîte aux lettres pour un utilisateur local existant. The above command will take the AD user “Ted Williams” and add the Exchange attributes to his user account. (2010 sp3 hybrid env). com. Open the Exchange Management Shell, and then run the following cmdlet: Enable-RemoteMailbox -Archive. Select ‘Manage mailbox archive’ and turn on ‘Mailbox archive’. mail. Specify a template for location of new users and the licenses that will be assigned to them, then click OK. mail. ; User must change password at next logon Select this check box if you want the user to reset the password when they first log on to the remote mailbox. It doesn't retrieve the attributes of the associated cloud-based mailbox. This cmdlet is available in on-premises Exchange and in the cloud-based service. Learn more about TeamsThe Enable-Mailbox cmdlet mailbox-enables existing users, public folders, or InetOrgPerson objects by adding the mailbox attributes that are required by Exchange. Use the "Disable-RemoteMailbox" cmdlet to remove mailboxes from the cloud-based service but keep the associated user objects in the on-premises Active Directory. If you run New-RemoteMailbox -Shared for example, you'll get a remote shared mailbox on-prem. Enable-RemoteMailbox [email protected]. mail. 1 person found this reply helpful. com" isn't a valid SMTP address. then those would have to be reconfigured, as these attributes are not retained after a Disable-RemoteMailbox. Set-RemoteMailbox user -ExchangeGuid <the ExchangeGuid you copied above>. user@domain. Do I have to install anything to enable it? View best response. Domain estnew4. You can then import the pst into the ExO. The Exchange Online mailbox will be available after migration is completed ". Usermailboxes hosted on Office 365. You can use the Get. Get-Mailbox -Identity <mailbox identity>. Management. Mailboxes migrated using a staged migration remain in the on-premises Exchange Organization as User or Legacy Mailboxes. · Hi, Yes, to create an Office 365. mace. For staff mailboxes, the staff logon to the domain using the SamAccountName, however their O365 login and email address are based on the userPrincipalName. Enable Archive Mailbox using Exchange Admin Center: Follow the steps below to turn on archiving through EAC. EnableRemoteMailboxTable 1. I think you need to use the cmdlet Enable-RemoteMailbox. com. Send on Behalf: A mailbox on an on-premises Exchange server can be granted the Send on Behalf permission to a Microsoft 365 or Office 365 mailbox, and vice versa. Referring to this article for detailed information about creating users in Exchange hybrid. If we go with the example of an object that has the correct mail and proxyAddress attributes, then the core remediation steps should be as follows: Use the Enable-RemoteMailbox cmdlet, with the existing-PrimarySMTPAddress value and -RemoteRoutingAddress parameter to update the user so that they have the Exchange. Hi I am using exchange 2010 hybrid environment, for one my user i want to create his mailbox on cloud. What I want is to. The first step is to open up your Exchange admin center. TechNet Docs covers this on this page . NET. You can get the information using the Get-Mailbox cmdlet by specifying the mailbox identity. The domain name can't contain spaces and it has to have a prefix and a suffix, such as example. It will enable remote mailbox and assign a remote routing address accordingly. 1. LouD. Open Active Directory Domains and Trusts. While Shared mailboxes are not usually a significant number when considering all. 2). ’. com. Set-Remote Mailbox. check if the authentication (= Basic) was changed or if AllowUnencrypted was set to true. Delegated mailbox permissions enable someone to manage some part of another user's mailbox. incorrectly creating the user account such as having a period at the end of their name (firstnamelastname. com” -PrimarySMTPAddress “example. com (where, again, JohnS is referencing the UPN. onmicrosoft. Enable-RemoteMailbox –Identity UPN/SamAccountName –PrimarySMTPAddress Email address is removed for privacy –RemoteRoutingAddress Email address is removed for privacy. i have created account in Active Directory. This example uses alternate credentials to retrieve a list of one or more mail-enabled users with mailboxes in the service. com, on onprem do i need to create alias as glenn. I have located a script to copy back the. Enable-RemoteMailbox "Kim Akers" -RemoteRoutingAddress "[email protected]" isn't a valid SMTP [email protected]. You need to be assigned permissions before you can run. For detailed syntax and parameter information, see Enable-Mailbox. It will enable remote mailbox and assign a remote routing address accordingly. onmicrosoft. Exchange: Failed to disable the mailbox <GUID> due to a conflict in directory settings. Creation of the mailbox in the. Connect to Exchange Online. The New-RemoteMailbox cmdlet creates an on-premises mail user. Change the tenant information to yours. Exchange. It sounds like you're not using Enable-RemoteMailbox on new users (or using the onpremise ECP to create New-> Office 365 Mailbox). You then need to get the Mailbox GUID of the Office 365 mailbox. com" -alias user1. mail. mail. 1. Cannot validate argument on parameter 'Id'. Run Exchange Management Shell as administrator. Once that is completed a license will need to be assigned for the mailbox to be available. Also, new-remotemailbox allows the user 30 days of acccess to mail (Outlook or OWA) until the account is licensed. csv) {Enable-RemoteMailbox -Identity $i@mydomain. Example: Enable-RemoteMailbox "User" -Archive. Go to Exchange admin center. As in Example 1, this example assumes that mail flow and. We've solved the issue internally by adding -PrimarySmtpAddress To the initial Enable-RemoteMailbox. Yes, it's possible. Supply a non-null argument and try the command. How do I set it to the 365 address [email protected], if you have already created a user account, for example, via AD Users & Computers, and then the account was subsequently licensed in the cloud, and given a mailbox (but without the on-premises EAC being aware of it). The issue is every time we create a new AD user, the user's mailbox doesn't show in the on-prem EAC, which. Fig. The correct code is: Powershell. onmi c roso f t. Let’s say you run this. After the user is mail-enabled, directory synchronization synchronizes the mail-enabled user to the service and. Directory synchronization must be configured correctly for a mailbox to be created in the service. onmicrosoft. 25156: Enable-RemoteMailbox Exchange cmdlet issued This is an event from Exchange audit event from LOGbinder EX generated by Log Admin Audit. The New-RemoteMailbox CmdLet will create an on-premises user account, an Office 365 user, and an Exchange Online mailbox. Enable-RemoteMailbox. onmicrosoft. Report abuse. Enable-RemoteMailbox -Room: Get-RemoteMailbox | Where. com is routing address and our domain is abcd. Let’s say you run this command: Enable-RemoteMailbox [email protected]” -Archive. Recently Microsoft added the ‘-Shared’ option to the New-RemoteMailbox cmdlet for Exchange 2013 CU21 and Exchange 2016 CU10. In an Exchange 2016 Hybrid environment I am trying to enable an on-prem user object as a Shared mailbox. mail. com" is coming from. Hi Jazz, >>I guess for Equipment and room i will be using -Equipment and -Room. Powershell. Set-RemoteMailbox "shared1"-PrimarySmtpAddress shared2 @contoso. Custom filters using the RecipientFilter parameter. onmicrosoft. For example, an arbitration mailbox is used for handling moderated recipients and distribution group membership approval. The way forward then is to: Enable-remotemailbox on the AD User (see below) Validate synchronization to Azure; Here are a few notes regarding the usage of enable-remotemailbox instead of new-remotemailbox. UPN -Database. Open the Exchange Management Shell on-prem and run the following cmdlets: Enable-RemoteMailbox user -RemoteRoutingAddress user@domain. There is no remote mailbox on Exchange on-premise--- If a Remote Mailbox isn’t present or has been accidentally deleted, you can create one and link it up to the Office. test1@Company portal . When creating a hybrid user mailbox with a Business Rule, after user creation, the remote routing address of the mailbox is set to the users email alias. Care is needed for this step, as the required step is to “disable” the mailboxes on Exchange 2013, and not “remove” them. The first to make the remote mailbox and the second to add. The Get-MailboxStatistics cmdlet requires at least one of the following parameters to complete successfully: Server, Database or Identity. Spice (1) flag Report. RecipientTasks. This is the command I would normally use if a user was not created correctly with a remote mailbox: Enable-RemoteMailbox "display name" -alias "username" -RemoteRoutingAddress "firstname. CustomAttribute15 -like "O365*")} | Enable-RemoteMailbox -Archive # Exit Exchange Powershell Module Remove. Precanned filters. The mail user contains a specific attribute, which indicates that an associated mailbox in the service should be created when the user is synchronized to the service using directory synchronization. test1@Company portal . The server in the cloud will read all those attributes and depending on the "type of mailbox" the server will create a mailbox in the cloud and assign the specified e-mail. mail. write-back, where you specify the enable-remotemailbox cmdlet via PSExecute. onmicrosoft. To manage your synchronised recipients and groups, connect to the new management server’s PowerShell and execute the following command: Add-PSSnapin. When the helpdesk login to the same workstation with recipient management permissions and run the same script they get an error: "No. An alternative is the Invoke-Command cmdlet, which allows you to run remote commands on multiple. com Enable-RemoteMailbox -Identity [email protected] the on-premises user as a remote mailbox: Enable-RemoteMailbox "user identity" -RemoteRoutingAddress "[email protected]@abcd. Published data for Enable Remote Mailbox (Hybrid) You can use the Enable Remote Mailbox (Hybrid) activity to create a mailbox in the cloud-based service for an existing user in the on-premises Active Directory (hybrid environment). com 3. Failed to create a remote mailbox for the user. You can use this cmdlet for one mailbox at a time. com" isn't a valid SMTP address. Enable-RemoteMailbox script Posted by JBo-S on Nov 17th, 2016 at 6:12 AM Solved Microsoft Office 365 I have a script that will: import a CSV and create users in. There are 3 methods that I know of: A) Enable remote mailbox with PS for existing AD account like you already posted. (look at Subscriber-UserAdd for an example to build upon) > Before I start re-inventing the wheel I. onmicrosoft. Get-RemoteMailbox not working. mail. In this article. Best practices and the latest news on Microsoft FastTrackHello Techies. Here is the "stack": Exchange 2016 Hybrid. Fill out the user information as you. Thankyou @snagrat Next question would be whilst SamAccountName is great for privisioning students mailboxes (where username and email adress match). Database. For more information about the Exchange cmdlets, see Exchange PowerShell. DC. Default naming context [MyServer. Click in the menu bar on View and enable Advanced Features. ExternalEmailAddress has an invalid value: "domainname. Or the Enable-RemoteMailbox cmdlet to mail-enable an existing on-premises user (with msExchRemoteRecipientType of 1 “Transitioned”) and create an associated mailbox in Office 365. c om > After the remote mailbox is provisioned, modify any custom mailbox attributes (for example, the legacyExchangeDN attribute) that you want and that weren't assigned by an email address policy to the user account. com---- this works just fine. Enable-remotemailbox on the AD User (see below) Validate synchronization to Azure; Here are a few notes regarding the usage of enable-remotemailbox instead of new-remotemailbox. This procedure shows the role-based access control (RBAC) management roles and role groups that give you access to a specified cmdlet—even if your organization has custom roles, custom role groups, or custom role assignments. Syntax Description Examples Parameters Inputs Outputs Syntax PowerShell Disable-RemoteMailbox [-Identity] <RemoteMailboxIdParameter> [-Archive] [-Confirm] [. I just created over 200+ resources in our environment. For example, the attributes "homeMDB" you mentioned, represents the proper noun of the. Starting in Cumulative Update 21 for Exchange Server 2013 and Cumulative Update 10 for Exchange Server 2016 in an on-premises Exchange Server environment, you can directly create or modify a remote shared mailbox by using the new parameter -shared with the following cmdlets: This example assumes that you've already removed the Exchange Online license for the mailbox, and that directory synchronization has been configured. OU=MyBusiness -->. com. When mailbox-enabling an existing user, beware of non-supported characters in the user account or Name. N/A. Use the value of the AppId found in the previous step and run the following command to remove the application: Remove-HybridApplication -appId <GUID> -Credential (Get-Credential)For example; if a user is listed on-prem as a remote mailbox with a cloud archive, then you should expect EXO to have a primary and an archive mailbox for this user. Use the Enable-RemoteMailbox cmdlet to enable a remote mailbox. The first step is to open up your Exchange admin center. [PS] C:>Enable-RemoteMailbox . Click ‘Mailboxes’ under ‘Recipients. Thanks in advance. onmicrosoft. I'm in an hybrid environement with Exchange 2016 and Office 365. The domain name can't contain spaces and it has to have a prefix and a. Which will read users from a csv. However, the cloud-based mailbox has additional attributes that you can't view. Example below:Running the below command should be enough. In addition, the second command can change the alias for the remote mailbox, if you want to add email. If this is your scenario then you’ll have to use the PowerShell cmdlet(s) to enable-remotemailbox. With the Set-Mailbox cmdlet, you can modify nearly any attribute of a mailbox, including both the common ones (such as name, display name, alias, logon name, title, and company) and the uncommon ones (such as Arbitration, ArbitrationMailbox, AttributesToClear and ArchiveDatabase). N/A. com Set-RemoteMailbox user -ExchangeGuid <the. The Set-Mailbox cmdlet is available for both on. com. Which will read users from a csv. Get-RemoteMailbox-ResultSize Unlimited | Get-MailboxPermission. Enable-RemoteMailbox: [-Identity user] [-Shared] [. Yes, you could create a shared mailbox on-premises and migrate to Online. Spice (1) flag Report. When Exchange gets a message from an SMTP relay device (like an MFP doing scan to email), it looks at the targetAddress field of the AD account to figure out where to forward the message. com Set. The credentials are used to access the on-premises Active Directory domain controllers. The below is one of the examples from there. com -Alias exchalias -RemoteRoutingAddress exchalias@tenantname. Set the RemoteRecipientType attribute to reflect that the mailbox is a migrated Shared mailbox. mail. For us, that always matches the left part of the email address, and the UPN will also match that email address when this is all done. If the user information is not returned, proceed to step 6. mail. test1" -RemoteRoutingAddress "user1. Then, when you assign the user account a license for Exchange Online, a mailbox is automatically created for the user. Which is of course required for Office 365 to. User's post on January 14, 2016. Wait till thats done since I don't think you can do both Enable-RemoteMailbox and Set-RemoteMailbox at the same time. The domain of the object in FQDN format. This cmdlet is available only in on-premises Exchange. . Then run Enable-RemoteMailbox cmdlet for the AD User. Should look something like "enable-remotemailbox <mailbox> -Primarysmtpaddress first. depp@ssss . This situation occurs if the mailbox was created directly in Exchange Online since the Enable-RemoteMailbox command does not populate this attribute; also it is not included in the Azure AD Connect write back attributes. To delete a mailbox from Exchange Server, go through. Replied on January 14, 2016. New-RemoteMailbox. com -Archive For detailed syntax and parameter information, see Enable-RemoteMailbox. The failure to disable the mailbox due to a conflict in directory settings message has disappeared now. Reply. As you use the On-Prem - Exchange-server to "edit" the specific AD-Attributes for Mailboxes (either local or cloud), that data is copied to the cloud using the azure AD sync. + CategoryInfo : NotSpecified: (:) [Enable-RemoteMailbox], DataValidationException + FullyQualifiedErrorId : [Server=REDACTED,RequestId=980e059c-1250-4de3-9b3d-27964d9cd9b1,TimeStamp=12/15/2021 11:12:18 PM] [FailureCategory=Cmdlet. I think you need to use the cmdlet Enable-RemoteMailbox. Note: The proxy address will always be @tenant. You then need to get the Mailbox GUID of the. The on-premises Exchange mailboxes are empty. com. when group-based licensing is used). Microsoft Graph has always provided access to customer mailboxes in the cloud on Exchange Online as part of Microsoft 365. 1. As you use the On-Prem - Exchange-server to "edit" the specific AD-Attributes for Mailboxes (either local or cloud), that data is copied to the cloud using the azure AD sync. Run Delta sync. Some parameters and settings may be exclusive to one environment or the other. Default is True, when selected. Please click Mark as Best Response & Like if my post helped you to solve your issue. Seems that Microsoft neglected to mention the need for the –RemoteRoutingAddress parameter when using the Enable-RemoteMailbox command. Find input and output types for Exchange cmdlets. [PS] C:\>Enable-RemoteMailbox -Identity "Ali Tajran" -RemoteRoutingAddress "Ali. With the Remove-RemoteMailbox cmdlet, you can remove an on-premises mail-enabled user and the mailbox from the service. The mail-enabled user contains a specific attribute that indicates that an associated mailbox in the service should be created when the user is synchronized to the service using directory synchronization. onmicrosoft. Go to a new user in AD, go to the account tab, and check what UPN the user is set to use. If we go with the example of an object that has the correct mail and proxyAddress attributes, then the core remediation steps should be as follows: Use the Enable-RemoteMailbox cmdlet, with the existing-PrimarySMTPAddress value and -RemoteRoutingAddress parameter to update the user so that they have the Exchange attributes required stamped onto. mail. onmicrosoft. However, because the user interface, the Exchange Admin Center, is part of Exchange Server, it. com:Calendar" -User "[email protected]. Hi I am using exchange 2010 hybrid environment, for one my user i want to create his mailbox on cloud. Learning PowerShell with Active Directory Administrative Center (PowerShell History Viewer) I applied a workaround, instead of adding the primarysmtp through the enable-remotemailbox command I do it through the set-aduser command. To do so, type: winrm s winrm/config/client '@ {TrustedHosts="RemoteComputer"}'. resource. Couple of environmental things: 1) Powershell session is being established with an on-prem Hybrid server without issue. text/html 10/29/2013 8:46:59 PM Holden_Caulfield_1951 0. Enable-RemoteMailbox username -RemoteRoutingAddress [email protected]@exoip. com" Microsoft Exchange Online Management Microsoft Exchange Online: A Microsoft email and calendaring hosted service. onmicrosoft. Get Mailbox. For example, dc01. The output shows the mailbox creation. onmicrosoft. From Steve’s Blog: When enabling the remote mailbox, use the –RemoteRoutingAddress parameter, specifying your alias and service domain/Office 365 tenant, for example: Enable-RemoteMailbox <username> -RemoteRoutingAddress <alias>@<tenantName>. I know this has to be covered in a 100 blog posts but I am having issues finding a good example. com. Yes, for different recipient type, you can use difference parameters, details see: Enable-RemoteMailbox-Equipment: The Equipment switch specifies that the mailbox in the service should be created as an equipment resource mailbox. Browse to Click the tiles icon and select the Admin tile. see previous comm. The first to make the remote mailbox and the second to add an archive to that remote mailbox: Enable-RemoteMailbox -Identity [email protected] the on-premises Exchange, MRSProxy converts the mailbox to a mail-enabled user of type ‘remote mailbox’ (Enable-RemoteMailbox), and the source (on-premises) mailbox is store [email protected]. The errors show that ExchangeGuid is mandatory on UserMailbox and Database is mandatory on UserMailbox. mail. 2. true (ByPropertyName) Domain <String>. With precanned filters, you can use either the Exchange PowerShell or the Exchange admin center (EAC). msappproxy. The next thing I want the script to do is open a powershell session on the on-prem Exchange server and enable the remote mailbox, pointing to Office 365. In Both cases, all Mailbox and Mail users will be available in GAL and mail. Powershell. onmicrosoft. depp Enable-RemoteMailbox: ExternalEmailAddress has an invalid value: "@ssss . 1 person found this reply helpful. Enable-RemoteMailbox "Kim Akers" -RemoteRoutingAddress "[email protected] documentation, see Example2, seems to suggest the following command should workEnable-RemoteMailbox -Identity fake@fake. i want to create remote mailbox for this user. Help With Enable-RemoteMailbox. I'm not certain if you're trying to write the enable-remotemailbox to console or execute it. his. Hybrid AD/Exchange Enable-RemoteMailbox. After you onboard an on-premises mailbox to Exchange Online, and you enable Litigation Hold, you notice that the LitigationHoldEnabled value for a mailbox does not match between the cloud and on-premises locations. com" isn't a valid SMTP address. Here is the correct command - this worked for me: Enable-RemoteMailbox -identity userid -RemoteRoutingAddress . Thanks to Steve’s blog post, the issue was quickly resolved. depp@ssss . com" isn't a valid SMTP address. The Enable-RemoteMailbox cmdlet mail-enables an existing on-premises user. you can change as per your needs. An information window will appear where you can select the one-click button that reads ‘Enable remote mailbox. mail. This would create those resources in cloud. Our on-prem ECP shows the mailbox under 'Mailboxes' (as opposed to under 'Shared'), which makes sense seeing. You can open an interactive session with the Enter-PSSession cmdlet (One-to-One Remoting). Q&A for work. Hi, Yes, to create an Office 365 mailbox for an existing user, we can use the first command you provided above, Enable-RemoteMailbox. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.