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Relay access denied when using SMTP to external recipients - How to solve it in Ubuntu 14.04 ?

Host Details

smtp-host: 10.0.0.100
client-host: 10.0.0.50
relayhost: Pub IP address
Error: Relay access denied @client-host

1st Try: Send Email from Command Line Telnet

ubuntu@client-host:~$ telnet stmp-host 25…

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Linux

Display IP address in banner text

Rather then use the console when working on a system I generally prefer to connect remotely using ‘ssh’ as it is so much easier to be able to cut and paste from a terminal session on my workstation that way. 953 more words

Linux

How to Install Latest version of Nginx on Ubuntu 14.04+ ?

What is Nginx ?

nginx is an HTTP and reverse proxy server, a mail proxy server, and a generic TCP/UDP proxy server, originally written by… 192 more words

Linux

Ubuntu media server WakeOnLan

I have always been conservative when it comes to saving electricity in my household not because I want to but because 1 kWh costs me R1.87, hence I had to think of a better solution rather than running my server 24 hours per day with an average load wattage of 532W, if one does the maths it costs me roughly R23.87 per day when always on. 196 more words

Ubuntu

how to compile and install newest version of proftpd ftp server in Ubuntu 16.04 LTS 64-bit using Github as source

# how to compile and install newest version of 
# proftpd 
# in Ubuntu 16.04 LTS 64-bit:
sudo apt-get update
sudo apt-get install checkinstall build-essential
sudo apt-get build-dep proftpd-dfsg proftpd-basic 
sudo apt-get purge proftpd-basic
cd
sudo rm -rf proftpd
git clone https://github.com/proftpd/proftpd
cd proftpd
sudo ./configure
sudo make clean
sudo make
sudo checkinstall
# type 3 and hit  to enter 1.3.5b as the software version
apt-cache show proftpd
# Terminal output of 'apt-cache show proftpd' should be similar to this:
# Package: proftpd
# Status: install ok installed
# Priority: extra
# Section: checkinstall
# Installed-Size: 8492
# Maintainer: root
# Architecture: amd64
# Version: 1.3.5b-1
# Provides: proftpd
# Description: Package created with checkinstall 1.6.2
# Description-md5: 556b8d22567101c7733f37ce6557412e
Ubuntu

Move files by date into different directory using CLI

A while back I was unfortunate in such a way that my HDD that I primarily use as photo archive started having mechanical issues, and before It died on my arms I had the opportunity to backup most of my pictures, however most of them were truncated and had to be discarded and the ones I could recover their filenames where overwritten with random filenames and ascii codes. 115 more words

Linux

Configure Linux High Availability Cluster in Ubuntu with Corosync

This post show how to configure a basic High Availability cluster in Ubuntu using Corosync (cluster manager) and Pacemaker (cluster resources manager) software available in Ubuntu repositories (tested on Ubuntu 14.04). 1,278 more words

Linux