[Solved] A whole lot of mails to PublicFolderMailbox
We recently noticed a lot of mails from CloudPanelFirstMaster@domain.com to PublicFolderMailboxes…. with the Subject HierarchySync_Ping…
I’m Aware that the HierarchySync is by design from MS. But why do they come from the first Master? This is the primary PublicFolder Mailbox user.
Is this normal behaviour or is there anything wrong?