We now configure Postfix so it relays the email to another server, in our case it will be a Microsoft Exchange Server. We start by editting the following file: /etc/postfix/main.cf Find: mydestination = $myhostname, localhost.$mydomain, localhost Change it to: mydestination = Find: #local_recipient_maps = Change it to: local_recipient_maps = Find: # - You redefine the…
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About: Matrix7
Recent Posts by Matrix7
CentOS 6.4 Email Gateway (Part 3)
CentOS 6.4 Email Gateway (Part 2)
We are now going to configure Postfix to act as a Gateway or a relay if you like, to our main email server which is a Microsoft Exchange Server. This has dual benefits: The Exchange Server is not directly exposed to the internet The load on our Exchange Server is greatly reduced due to Greylisting…
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CentOS 6.4 Email Gateway (Part 1)
This is a 7 Step "how to" in creating an Anti-Spam Email Gateway. First step is to install a bare bones CentOS system. I chose the 32bit CentOS 6.4 Minimal Install from here: CentOS 32bit Minimal Install Once your chosen flavour of CentOS is installed and you have ensured that you have configured the system…
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CentOS 6.4 Speed Up Your Website
I often get asked how to speed up a website. Here are 2 of the easiest and quickest ways to dramatically improve the performance of your website. I am assuming you have root access to either your VPS or CentOS installation. Let's begin: Edit the file /etc/httpd/conf/httpd.conf Find: KeepAliveTimeout Change To: KeepAliveTimeout 100 Close and…
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Recent Comments by Matrix7
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