In this part we will be adding to the mail server created in Installing A Mailserver on Ubuntu 14.04 LTS Part 1, in this part we will be building on that and adding anti-virus and anti-spam software and a tool to greylist emails to cut down on the work our server has to do. This will be added to postfix via amavis-new.
The server called mailserver will end up running the following servers and services. Once all the parts of this series posts are completed.
I wrote this HOWTO as record of what I did to get my own mail server up and running. I can now and in the future follow these steps again and rebuild my own mail server. I hope it is of use to others too.
This is the second part of a series of howtos showing one way to set up and use Samba4 as a drop in for MS Active Directory Server. The first part Samba4 AD DC on Ubuntu 14.04 is here
Let’s start by adding a small change to the Samba configuration on the AD, lab-addc1. Edit /etc/samba/smb.conf adding the following lines to the [globals] section.
Samba 4 is a good bit of software. If only that last few tweaks could be done to finish it and the documentation off it would be great software. I have found lot of ways to set up Samba4 as a AD DC most of which fail to work only this one series of steps worked. Samba4 configuration is really really flaky! The official Samba documentation is getting better and beginning to cover some of the configuration pitfalls.
For this how to we are building on some of my other howtos.
I no longer use the crippled PBIS software, I use the native Linux software which gives far better functionality.
A better way of Joining an Ubuntu Machine to Samba with Winbind
This was the third part of a series of howtos showing how to setup and use Samba4 as a drop in for MS Active Directory Server. The first part Samba4 AD DC on Ubuntu 14.04 is here. The second part in this series take a look at Administering AD DC via Windows.
In this part we will connect a Linux machine to the domain and then login with users configured with Active Directory. Therefore domain users will always have the same UID and GIDs regardless of the machine they log into.
Active Domain details
To create desktops I used my normal install method, starting with a minimal server and then adding MATE and other packages as required.
To setup a Synology NAS as a secondary DNS to provide a fall back if/when the primary DNS is off line. To setup a DNS and DHCP serve see my post for DNS with bind9 and DHCP on Ubuntu 14.04.
Updated for Ubuntu 14.04-3 LTS. If you are a home user and your network has grown such that you are tired of using all static IP addresses and having to configure the /etc/hosts files by hand, then use the great tool dnsmasq. See my How to set up dnsmasq. Dnsmasq is so much simpler to setup and maintain than bind9.
The Network File System (NFS) was developed to allow machines to mount a disk partition on a remote machine as if it were a local disk. It allows for fast, seamless sharing of files across a network.
Once the system is installed do not forget to configure the priority of the swap spaces. If the priority is set correctly then all your swap spaces will be used as it they are stripped making it faster.
To see the current swap space setup use the command :
swapon -s
I find the simplest way to install Ubuntu with MATE as the desktop with the minimum I can get away with is to start with the server ISO. Yes, I know there are smaller initial downloads when using the netboot image but that means you need to set up the whole net booting server system. That seems to be over kill and involves a lot more downloading and work. Especially when you are only going to use it once.
The resulting Ubuntu server installation takes about 1.5G of disk space. With MATE it goes to 2.5GB up to 4GB for the full Ubuntu install.