( mogorva | 2020. 11. 25., sze - 18:49 )

$ date

Wed Nov 25 18:48:08 CET 2020

$ nc -z -v -w3 104.47.5.36 25

nc: connect to 104.47.5.36 port 25 (tcp) failed: Connection refused

$ nc -z -v -w3 104.47.6.36 25

nc: connect to 104.47.6.36 port 25 (tcp) failed: Connection refused

tcp/587 dettó.