You have seen the following error in CMN_Error log:
ERROR CMN.logging [2936] - [165](1952)orig-^dest(1844)[IPAddress1:28040]-^[IPAddress2:25]: Caught Socket exception (System.Net.Sockets.SocketException (0x80004005): An established connection was aborted by the software in your host machine
at System.Net.Sockets.Socket.BeginReceive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, AsyncCallback callback, Object state)
at QuestSoftware.CMX.API.Core.Networking.AsyncReadLineSocket.DoBeginReceive(ReadState rs)
at QuestSoftware.CMX.API.Core.Networking.AsyncReadLineSocket.ReadLineLoop(ReadState readState)) with code(10053) on read
The connection was aborted by a third party application in the CMN Server.
Verify NO AntiVirus and Anti-Spam software is running between Domino and CMN servers
