Why telnet connection refused

The easiest way to ping a specific port is to use the telnet command followed by the IP address and the port that you want to ping. You can also specify a domain name instead of an IP address followed by the specific port to be pinged. How to find your port number on Windows.

Open Command Prompt. IP address is the address of the layer-3 IP protocol. Port number is the address of the layer-4 protocols. If you're not in a production environment where things need to be secure at all times you can try temporarily disabling your firewall if enabled to see if it works. If it works with your firewall down then it's the firewall blocking it. Postfix can be complicated to setup if you don't know what you're doing.

Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Telnet: Unable to connect to remote host: Connection refused Postfix - Ubuntu Asked 6 years, 5 months ago. Active 3 months ago. Viewed 4k times.

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Verify the name resolves to what you'd expect ping mail. EEAA well I tried to change chroot in master. Thanks — Waiyl Karim. Most importantly, we take a backup of this file before making changes. Also, we make sure to restart the xinetd service to reflect these changes. We can help you here. This error means that firewall is blocking connections to the specified port on the remote host. The firewall can be at the remote host or at the intermediate level. In such cases, our Support Engineers get the traceroute results from the client side to the destination end.

This gives us an idea where the connection is getting interrupted. If the connection is interrupted at the remote host, then we make sure that the required port is opened in the server firewall.

Alternatively, if the connection drops at the intermediate level, then most probably the issue lies at the ISP end.

In such cases, customers need to contact the ISP end to fix the problem. Another possible reason for this error is that there is no service listening on the connected port. For example, server owners usually set the HTTP port to So, users receive the below error.

In such cases, our Support Engineers first verify whether the service is enabled and running on the server. For example, on Linux servers, we check the status of http service as below.

Further, we verify the port that this service is listening. For example, we use the netstat command to verify the port on which the http service listens. Click here, and get one of our Support Engineers for your help. In short, telnet: connection refused by remote host is a common error raised by the customers.

This can occur due to firewall restrictions, disabled telnet service, etc. Never again lose customers to poor server speed! Let us help you. Your email address will not be published. Submit Comment.