Later, we notify the customer of the reason for the block and the remedial measures. csf -g xx.xx.xx.xxĪdditionally, if the IP address is blocked, we will immediately unblock it and restore FTP access. Additionally, ISPs can block outbound FTP traffic.ĭetermine whether the customer’s IP address xx.xx.xx.xx is blocked using the following command. We’ve seen instances where a third-party firewall or antivirus is blocking FTP connections on the system. Similarly, another possibility is that the user’s outbound connections are being blocked at the ISP or at their local firewall. The IP address may be blocked for a variety of reasons, including abnormal activity, excessive connections, and so on. We’ve seen instances where the remote server refuses to accept connections from a particular IP address or range of IP addresses. On Plesk servers, the hostname is changed via Tools & Settings > Server Settings.Īnother possibility for this error is that the firewall configurations or restrictions are incorrect. Important: Restart the network service to take effect. If ping doesn’t work, add the correct hostname in the server configuration files. The ping command is used to determine the FTP host’s connectivity. getaddrinfo 'Hostname_Is_Here' error: Name or service not known warning: unable to determine IP address of ' domain Additionally, this error is recorded in the server logs (/var/log/messages).
This error can occur when the FTP server is unable to determine the server’s IP address from the hostname. Now, let’s discuss the most frequently occurring causes of this error and how our server management team resolve them. However, this is a temporary condition, and the action may be requested again.Īdditionally, the FTP error 421 service not available indicates that the connection to the remote server is unavailable. FTP error code 4xx indicates that the connection was not attempted and that the requested action did not occur.
0 kommentar(er)
