Subj : Error -1 To : All From : Flavio Bessa Date : Mon May 17 2021 11:25 am Hello, After solving the issues related to echomail, I have configured my experimental system at my raspberry pi to work only with NNTP services. After making the necessary changes at the config, running sudo ufw allow 119, I ran ./mis server and got this error below: “Unable to open IPV4 port: Error -1 (13)” What else can I check? -- Até logo, Flavio Bessa --- NewsTap/5.5 (iPhone/iPod Touch) * Origin: Andromeda - Saturn's Orbit NNTP Gateway, Brazil (4:801/188) .