The only place from where I could execute the binary smsExport was from /home/user. Anywhere else, e.g. under /home/user/MyDocs/N9Export I could neither alter permissions nor let it run (always permission denied).
/dev/mmcblk0p1 on /home/user/MyDocs type vfat (rw,nosuid,nodev,noexec,noatime,nodiratime,uid=29999,fmask=0133,dmask=0000,allow_utime=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,rodir,errors=remount-ro)