scp - Problem in Copying file from system A to system B using system C

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http://www.linuxquestions.org – I am facing a problem while copying file from one system to another system. Configuartion : a) All three are linux systems. b) ssh is installed on all three systems. c) IP of system-A is & IP of system-B is Process : I am using system C (ubuntu). I am trying to copy a file from system A (centos) to system B (ubuntu). I am using following command. Code: # scp It gives following error. Code: Host key verification failed. lost connection I have removed known_hosts file of all three systems but it still gives the er (HowTos)