Hello, Trying to develop Fax 2 Email features. I am sending fax from the Zoiper for testing and it works perfectly in my local machine but getting permission related error for receiving fax on server 2016-12-05 13:18:38.155419 [DEBUG] mod_spandsp_fax.c:317 === Negotiation Result ======================================================= 2016-12-05 13:18:38.155419 [DEBUG] mod_spandsp_fax.c:318 Remote station id: 964737 2016-12-05 13:18:38.155419 [DEBUG] mod_spandsp_fax.c:319 Local station id: SpanDSP Fax Ident 2016-12-05 13:18:38.155419 [DEBUG] mod_spandsp_fax.c:320 Transfer Rate: 12000 2016-12-05 13:18:38.155419 [DEBUG] mod_spandsp_fax.c:322 ECM status off 2016-12-05 13:18:38.155419 [DEBUG] mod_spandsp_fax.c:323 remote country: 2016-12-05 13:18:38.155419 [DEBUG] mod_spandsp_fax.c:324 remote vendor: 2016-12-05 13:18:38.155419 [DEBUG] mod_spandsp_fax.c:325 remote model: 2016-12-05 13:18:38.155419 [DEBUG] mod_spandsp_fax.c:327 ============================================================================== 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:496 ============================================================================== 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:508 Fax processing not successful - result (41) TIFF/F file cannot be opened. 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:513 Remote station id: 964737 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:514 Local station id: SpanDSP Fax Ident 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:515 Pages transferred: 0 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:517 Total fax pages: 0 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:518 Image resolution: 0x0 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:519 Transfer Rate: 12000 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:521 ECM status off 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:522 remote country: 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:523 remote vendor: 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:524 remote model: 2016-12-05 13:18:40.635418 [DEBUG] mod_spandsp_fax.c:526 ============================================================================== Can any body help me please to resolve that issue? I have attached my freeswitch logs it may help. http://pastebin.com/edTEimae