Hi ;

How to enable logs into an exchange account:

After you connect to your Exchange PowerShell organization, use PowerShell to enable mailbox audit logging for a mailbox / 

Set-Mailbox -Identity "Name of the user" -AuditEnabled $true

 

Alternatively, you can enable mailbox auditing for all mailboxes in your organization.

Get-Mailbox -ResultSize Unlimited -Filter {RecipientTypeDetails -eq "UserMailbox"} | Set-Mailbox -AuditEnabled $true