Mailbox RetentionPolicy

Execute the below command to verify the retention policy set on the mailbox.

Get-mailbox [email protected] -resultsize unlimited | ft Name, Retentionpolicy

Also, if you wish to set any new policy, execute the below command to set the desired retention policy

Set-Mailbox [email protected] -RetentionPolicy ‘Policyname’

Note: Policy name replace with the policy name set on your environmant.

Thanks
WintelAdmin