So the IT guy setup new Window FM Server for one of my client. Everything is working fine but I am getting this email from the server. Looks to me like it is related to disconnect a client for exceeding idle time.
FileMaker Server 14.0.4 on DBSERVER reported the following event:
2017-06-08 18:19:40.812 -0700 Warning 661 DBSERVER Client "Emily (CGSURFACE2) [192.168.42.105]" authentication failed on database "Rev_BSYS_V2.fmp12" using "Admin [fmapp]".