Lapho usebenzisa i-Microsoft Outlook ukuze ufinyelele a khohlakele or oyintandane ifolda engaxhunyiwe ku-inthanethi (OST) ifayela, noma ukuyivumelanisa neseva ye-Exchange, ungase uhlangabezane nezinhlobonhlobo zemiyalezo yamaphutha. Ukukusiza ukuthi uqonde lawa maphutha kangcono, sizokunikeza uhlu lwe-most ezivamile, ezihlelwe ngobuningi. Ngephutha ngalinye, sizobeka uphawu lwalo, sicacise umsuka walo, futhi sinikeze isisombululo. Kuhlu olulandelayo, 'xxxx.ost' izomela i-Exchange eyinkinga OST igama lefayela.

Ngaphezu kwalokho, lapho usebenzisa ifolda engaxhunyiwe ku-inthanethi (OST) nefayela le-Microsoft Exchange, ungahlangabezana nezinkinga ezilandelayo kaningi, ezingaxazululwa ngu DataNumen Exchange Recovery kalula.