The acceptable document types are .asc, .avi, .bmp, .cer, .csv, .doc, .docx, .dot, .dxf, .ent, .gif, .htm, .html, .jpeg, .jpg, .log, .mpeg, .mpg, .mpp, .msg, .mso, .odb, .odf, .odg, .odp, .ods, .odt, .p7m, .gno, .p7s, .pcx, .pdf, .png, .pot, .pps, .ppsx, .ppt, .pptx, .psd, .pub, .rtf, .svg, .sxc, .sxd, .sxi, .sxw, .tar, .tif, .tiff, .txt, .vcf, .vsd, .wav, .wmv, .xls, .xlsx, .xml, .zip

The file limit is 50MB.