Hi Shengting, I do see a connection attempt from telnet, and the expected disconnection due to inactivity; 20160822T203559.855679Z aeolus.wsu.edu[20027] NOTE ldmd.c:718:handle_connection() Connection from client LDM silent for 60 seconds 20160822T203559.855743Z aeolus.wsu.edu[20027] NOTE ldmd.c:187:cleanup() Exiting Can you try the following; notifyme -vxl- -h uni14.unidata.ucar.edu and let me know the result mike Ticket Details =================== Ticket ID: ZEM-237169 Department: Support IDD Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.