Office 365 . A user named User1 has a mailbox. You need to ensure that all of the email messages sent and received by User1 are accessible to the audit department for 60 days, even if User1 permanently deletes the messages. What should I do?
which one is right
Set-MailboxDatabase cmdlet and specify the -deleteditemretention parameter.
Set-Mailbox cmdlet and specify the -litigationholdenabled parameter.
Set-Mailbox cmdlet and specify the -singleitemrecoveryenabled parameter.
Set-MailboxDatabase cmdlet and specify the -eventhistoryretentionperiod parameter.