Karl Katzke

What a mouthful. Like most other americans who live on a budget, I’m taking a “staycation” this weekend. What better thing to do than to get my mail server migrated to my new VPS? Well, first, I suppose, I should get the mail server all working on the new VPS…

In CentOS, the default Postfix package doesn’t have MySQL support built in. If you’ve got the priorities plugin installed, you’re either going to need to disable it or otherwise work around it so that you get the one from the centosplus repo. Other than that, it’s been made about as easy as it can be… just keep in mind as you’re reading this tutorial that I really loathe administering mail servers and consider it to be a quite onerous chore that’s been made even more onerous by spammers and hackers and script kiddies and what have you.

You’ll need to install: yum install gcc postfix clamav mysql-server mysql-devel spamassassin
dovecot php php-mbstring php-mysql rpm-build. There’s no RPM for Postfixadmin, but it’s available from the project’s site on Sourceforge.

And now the fun begins. This howto assumes that you have a decent level of knowledge and skill setting up services that run on Linux.

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I really, really like the check_yum plugin. Here’s a link: http://www.openfusion.com.au/labs/nagios.

If you’re installing on CentOS, you’re going to want to
yum install elinks
, then run cpan as root and install
install Nagios::Plugin
… after that, you can install and add to your nagios command config. I usually run it in NRPE on …

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PHP 5.0.4, which is the most recent PHP release (current PHP release is 5.1.6) available for CentOS and RHEL 4, has a bunch of bugs that have been fixed in more recent branches. It’s also significantly slower than the 5.1 branch, and several modules like APC aren’t released for 5.0. …

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