One of our user is getting the below message every min. It not showing in inbox but show in unread mails search folder
15:46:16 Synchronizer Version 14.0.6131
15:46:16 Synchronizing Mailbox 'USER NAME'
15:46:16 Synchronizing local changes in folder 'Deleted Items'
15:46:16 Uploading to server 'XXXXXXXXXXX'
15:46:16 Synchronization of some deletions failed.
15:46:16 1 item(s) deleted in online folder