To set up out of office only for external users for all users in O365.

Hi @JustinMicheal-7973, How to set up out of office only for external users for all users in O365. I have set up remote domain but it is not working for external users Based on my test, please leave the settings on remote domain as default and then set the oof for external users only for all users in your organization: 1.Connect to Exchange Online Powershell, run the command below to verify the remote domain settings: Get-RemoteDomain | ft -AutoSize Name, DomainName, AllowedOOFType,AutoReplyEnabled 2.Run the following command to set up the automatic reply: Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails UserMailbox,SharedMailbox | Set-MailboxAutoReplyConfiguration -AutoReplyState enabled -InternalMessage $null -ExternalMessage "External auto-reply message." If an Answer is helpful, please click " Accept Answer " and upvote it. Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

OOS setup for users - Microsoft Q&A

Accepted answer

Yuki Sun-MSFT 40,781 Reputation points

2021-09-06T02:49:44.733+00:00
Hi @JustinMicheal-7973,

How to set up out of office only for external users for all users in O365. I have set up remote domain but it is not working for external users

Based on my test, please leave the settings on remote domain as default and then set the oof for external users only for all users in your organization:

1.Connect to Exchange Online Powershell, run the command below to verify the remote domain settings:

Get-RemoteDomain | ft -AutoSize Name, DomainName, AllowedOOFType,AutoReplyEnabled

2.Run the following command to set up the automatic reply:

Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails UserMailbox,SharedMailbox | Set-MailboxAutoReplyConfiguration -AutoReplyState enabled -InternalMessage $null -ExternalMessage "External auto-reply message."

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Sree 1,971 Reputation points

2021-09-07T12:06:54.677+00:00

powershell command will not set any message for the external users. It will just disable OOF setting for internal user. Is that correct?

Yuki Sun-MSFT 40,781 Reputation points

2021-09-08T05:21:35.933+00:00

Hi @JustinMicheal-7973,

powershell command will not set any message for the external users. It will just disable OOF setting for internal user. Is that correct?

Are you referring to the command in Step2 as mentioned in my reply earlier? If this is the case, it will set the auto-reply for external senders for all user mailboxes and shared mailboxes in your organization while no auto-reply will be sent to internal senders.

After running this command, the value set for the "-ExternalMessage" parameter will be sent to the external senders as the automatic reply. And since the value for "-InternalMessage" is set to "$null", no auto reply will be sent to internal senders.

If an Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Yuki Sun-MSFT 40,781 Reputation points

2021-09-30T08:45:12.45+00:00

Hi @JustinMicheal-7973,

It has been a few days and I am just wondering how things are going with this issue. Any update would be appreciated. Thanks!
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OOS setup for users

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