If you manage your company's email server, you know security is a challenge. You have to deal with spam and worry about intruders taking over your mail server and using it for a spambot. Either situation can cost you data, time, and money. There is a way to prevent these occurrences.
With the help of an email gateway like Scrollout, you can place a secure "wall" between the outside world and your mail server. Scrollout allows you to set up a powerful security measure for your email server. Out of the box, Scrollout can handle antispam, antivirus, and data loss prevention for existing email servers, such as Microsoft Exchange, Lotus Domino, Postfix, Exim, qmail, and more. There's no migration and very little setup required. This tutorial shows how easy Scrollout is to get up and running.
Scrollout runs on a Linux platform. You can either install a full instance of the server from a downloaded ISO image, or, if you already have a Ubuntu machine running (that is not your email server), you can install it with these simple steps:
- Open a terminal window.
- Change into the /tmp directory.
- Issue the command sudo wget http://sourceforge.net/projects/Scrollout/files/update/Scrolloutf1.tar/download -O Scrolloutf1.tar.
- Issue the command tar -xvf Scrolloutf1.tar.
- Issue the command chmod 755 /tmp/Scrolloutf1/www/bin/*.
- Issue the command /tmp/Scrolloutf1/www/bin/install.sh.
Once installed, go to the address http://ip_of_Scrollout_server/ (ip_of_Scrollout_server is the server's IP address) and use the credentials:
- username: Admin
- password: 123456
The first thing you need to do is change the default password.
If you do the full install from the ISO, follow these four steps:
- Download the ISO.
- Burn the image to disk.
- Boot the server from the newly burned disk.
- Walk through the guided installation wizard.
The installation of the platform is very simple. If you've ever installed an operating system, you'll have zero problems. After installing the full platform, accessing the system is the same as if you installed the software on an existing server (see above).
It's surprisingly easy to set up this system. After you change the admin password and log in to the admin control panel (Figure A), click the Connect button.
The well-designed interface makes Scrollout easy to use.
Most of the information for the first step will be auto-filled. This information includes:
- Local IP address
- Subnet mask
- DNS servers
- DNS suffixes
If any of the detected information is incorrect, make the changes and click the Apply button (Figure B).
Make sure all of the information is correct before you hit the Apply button.
Click the Route button and point all necessary email domains to the email servers' IP addresses. For example: If you have domain1.com that points to 192.168.0.1 and domain2.com that points to 192.168.0.100, you would set it up here (Figure C). You can have two domains point to one server; this will depend upon your internal setup. Remember: The mail server cannot be the same address as the Scrollout server.
Pointing domains to correct IP addresses.
This is all you need to do to get the system up and running. There are some optional configurations:
- Under the Secure section, you can set the aggressiveness of various filters from 1-10, with 1 being the most aggressive, and set up the Collector for spam learning.
- You can set the countries with which you conduct business in the Secure | Countries section. Each country is set as a Business Area, a Foreign Area, or Out Of Area (Refuse).
Now you need to either configure your router to point all incoming email traffic to the Scrollout server, or set your email MX records to point to the IP address of the Scrollout server. The latter will require the Scrollout server to have a WAN-facing IP address.
Bottom lineIf you're looking for an easy, cost-effective way to secure your email server, look no further than Scrollout. And if you don't have extra hardware, you can always set it up as a virtual machine
Jack Wallen is an award-winning writer for TechRepublic and Linux.com. He’s an avid promoter of open source and the voice of The Android Expert. For more news about Jack Wallen, visit his website getjackd.net.