Linux - SoftwareThis forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.
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.
I have installed qmail in my redhat linux machine along with vpopmail so that I can provide mail account to my user. My problem is that I can receive mail in my maildir sent from localhost that is using my own smtp server. But mail sent from another remote host can't be recived by my mail server. Can you tell me what's problem in my qmail.
Yes my DNS address is resovled probperly when I do dig mail.host.com it shows the ip address of my mail server.
I tried to send message from remote host doing telnet smtp.hos.com 25
and it says messages accepted for delivery.
However messsage is bounced back. with the follwing message.
Hi. This is the qmail-send program at abc.host.net
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
Sorry, I wasn't able to establish an SMTP connection. (#4.4.1)
I'm not going to try again; this message has been in the queue too long.
However I can received mail send using my local smtp server. Can anyone tell me why is remote mail not received? Do I need to open access in my cisco firewall access list to allow connection to my smtp server from globally?
One thing I have not made DNS entry for my smtp server "smtp.lumbini.com.np" in my ISP dns server. Do I need to made dns entry for smtp.lumbini.com.np too to receive mail from remote host?
Well, I've just tried to deliver a message to your postmaster address, see if you get this one:
rossy - trigger - Sun Oct 02 11:08:26
~> telnet krishna.wlink.com.np 25
Connected to krishna.wlink.com.np.
Escape character is '^]'.
220 krishna.wlink.com.np ESMTP qmail-smtpd ready
MAIL FROM:david_ross AT linuxquestions.net
250 krishna.wlink.com.np Hi [220.127.116.11] [18.104.22.168].
250 david_ross AT linuxquestions.net, sender OK
RCPT TO: postmaster AT baayu.com.np
250 postmaster AT baayu.com.np, recipient ok
354 go ahead
subject: testing by david_ross from LQ
This is a test.