Exchange Online Mail Flow Rules to stop supporting DLP-related rules, conditions, and actions

Bobby_ono While the Edit option is disabled for rules that include DLP-related conditions and actions, you can still click on the rule in the EAC to expose the rule's fly-out panel summary where you can still see the rule's description including its predicates and actions. The rule migration banner in Purview will only show up for ETRs that have linked DLP-policies in them. For rules that have DLP-related conditions/action those can't be migrated with the DLP migration wizard and won't trigger the banner in Purview. Using PowerShell try these cmdlets:

1. Check if you have ETRs linked to DLP policies via Exchange Online PowerShell:

Get-TransportRule | where { $_.DlpPolicyId -ne [Guid]::Empty }

2. Check if you have any other ETRs that include DLP-related conditions or actions:

Get-TransportRule | where { $_.SenderNotificationType -ne $null -or $_.MessageContainsDataClassifications -ne $null -or $_.ExceptIfMessageContainsDataClassifications -ne $null -or $_.HasSenderOverride -eq $true -or $_.ExceptIfHasSenderOverride -eq $true }