The below PowerShell commands will allow you to check which rules users have got setup in their Outlook rules section in Outlook 365.
Load the MSOnline module and connect to Office 365:
Import-Module MSOnline $UserCredential = Get-Credential Connect-MsolService -Credential $UserCredential $exchangeSession = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "https://outlook.office365.com/powershell-liveid/" -Credential $UserCredential -Authentication "Basic" -AllowRedirection Import-PSSession $exchangeSession -DisableNameChecking
Get a list of rules for a user:
Get-InboxRule -Mailbox jsmith
Show the detail for a particular rule:
Get-InboxRule -Mailbox jsmith -Identity "auto-reply rule" | Select -Property *