I'm checking that there are problems importing a PST file.
I tried to load a PST fiel of around 11GB.
In Outlook 2016 it loads smoothly and I find all the content that should be there.
Instead in SmarterMail's WEBMAIL some content was loaded and then it stopped updating and now it is no longer updating anything from Outlook to SmarterMail.
I noticed that a lot of errors like this appear in the MAPI LOGS:
[2020.04.09] 17:56:26.075 [{2349A811-62B2-4E3C-9240-DDD8130ECE34}:12] Exception: System.NullReferenceException: Riferimento a un oggetto non impostato su un'istanza di oggetto.
[2020.04.09] in MailService.Protocols.MAPI.ServerHandles.FolderHandleBase.CreateFolderHandleObject(MapiFolderContextData folderContext, Int64 folderId, MapiProcessorState processorState, Boolean getAllProperties)
[2020.04.09] in MailService.Protocols.MAPI.ServerHandles.SynchronizationUploadChangesContextHandleObject.HandleUploadRequest(User owner, db_folder_readonly dbFolder, ImportFlags importFlag, List`1 hierarchyValues, List`1 propertyValues, RopReturnValue& returnValue)
[2020.04.09] in MailService.Protocols.MAPI.Rops.ICSRops.RopSynchronizationImportHierarchyChange.Process(List`1 payloadServerObjectHandleTable)
[2020.04.09] in MailService.Protocols.MAPI.RequestTypes.ExecuteRequest.Process()
[2020.04.09] in MailService.Protocols.MAPI.MapiProcessor.Process()