Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
In my Intranet LAN I install Linux SuSE Version 10.0.
Sofar I Install and configure all the Network Services mostly I use the defaults.
It has been two weeks since I install and configure Postfix. Every time I want to test the Postfix using the KMail 1.8-2 (using KDE 3.4.2 Level 'b' SuSE 10.0), I receive error message "Sending of message failed. The message could not be sent because connecting to SMTP server vita.mama.com failed. The server may be unavailable or is refusing SMTP connections." or "Sending failed. Could not connect to host vita.mama.com".
Looking some suggetions I try to telnet to the host, i.e.
telnet localhost 25
telnet localhost smtp
telnet localhost 10025
and I receive response "Trying 127.0.0.1 ... Connected to localhost Escape character is '^]'
220 vita.mama.com ESMTP ^] telnet > quit
Which it sound good, but when I try to
telnet vita.mama.com 25
telnet vita.mama.com smtp
telnet vita.mama.com 10025
telnet 192.168.113.6 25
telnet 192.168.113.6 smtp
telnet 192.168.113.6 10025
the response I receive is:
Trying 192.168.113.6 ...
telnet: connect to address 192.168.113.6: Connection refused
So please who can help.
Last edited by zeraia77; 03-05-2006 at 02:46 AM.
Reason: I resolved the problem. It was master.cf configuration parameters.