As long as SharePoint is appropriately configured, Distribution Services is capable to deliver files to SharePoint folder.
Refer to the below technical note for detail:
KB36867: "Please enter a valid File location. Error: the File Location is not writable.” error occurs when specifying a SharePoint 2007 folder in the Device File Editor in MicroStrategy 9.x and 10.x Distribution Services
It is not supported to deliver files to SharePoint folder via Distribution Services.
Strategy will continue to investigate and post updates as soon as they are available.
Article Reference Number: KB42796
Third Party Software Installation WARNING: The third-party product(s) discussed in this technical note is manufactured by vendors independent of Strategy. Strategy makes no warranty, express, implied or otherwise, regarding this product, including its performance or reliability.