Set-MailboxAutoReplyConfiguration runbook for use with Azure Automation

Set-MailboxAutoReplyConfiguration.ps1

param (
    [string]$UserName
)

# Credential for the user mailbox to configure Out-of-office schedule for
$UserCredential = Get-AutomationPSCredential -Name $UserName

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection

$EXOModule = Import-PSSession $Session

# One hour earlier due to different time zone on the server side
$StartTime = Get-Date 07:00
$EndTime = Get-Date 15:00

# AutoReplyState = Enabled/Disabled/Scheduled
Set-MailboxAutoReplyConfiguration -Identity $UserName -StartTime $StartTime -EndTime $EndTime -AutoReplyState Scheduled

# Cleanup
Remove-Module -Name $EXOModule.Name

Remove-PSSession $Session