internal and external users in Exchange Online using PowerShell

 To set up an auto-reply for internal and external users in Exchange Online using PowerShell, you can follow these steps:

1. **Connect to Exchange Online PowerShell**: Open PowerShell and run the following commands to connect to Exchange Online:

```powershell

# Install and import the Exchange Online module if you haven't already

Install-Module -Name ExchangeOnlineManagement

Import-Module ExchangeOnlineManagement

# Connect to Exchange Online

Connect-ExchangeOnline -UserPrincipalName <your_administrator_username>

```

Replace `<your_administrator_username>` with your administrator username.

2. **Create the Auto-Reply Rule**:

```powershell

# Define the auto-reply message

$AutoReplyMessage = "Your auto-reply message here."

# Create the auto-reply rule

New-RemoteMailboxAutoReplyConfiguration -Identity <mailbox_identity> -InternalMessage $AutoReplyMessage -ExternalMessage $AutoReplyMessage

```

Replace `<mailbox_identity>` with the identity of the mailbox for which you want to set up the auto-reply.

3. **Verify the Auto-Reply Configuration**:

```powershell

# Verify the auto-reply configuration

Get-RemoteMailboxAutoReplyConfiguration -Identity <mailbox_identity>

```

Replace `<mailbox_identity>` with the identity of the mailbox you configured.

4. **Test the Auto-Reply**:

Send test emails from both internal and external email addresses to the configured mailbox to verify that the auto-reply is working as expected.

5. **Disconnect from Exchange Online PowerShell** (Optional):

Once you've completed the necessary tasks, you can disconnect from the Exchange Online PowerShell session:

```powershell

Disconnect-ExchangeOnline

```

These PowerShell commands will help you set up auto-replies for both internal and external users in Exchange Online. Make sure to adjust the parameters according to your specific requirements.