*BACKUP ALL DATA BEFORE UPGRADING YOUR SYSTEM

Update your sources.list:

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vim /etc/apt/sources.list
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Add the following sources:

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deb http://mirrors.kernel.org/debian/ wheezy main
deb-src http://mirrors.kernel.org/debian/ wheezy main

deb http://security.debian.org/ wheezy/updates main
deb-src http://security.debian.org/ wheezy/updates main

# wheezy-updates, previously known as ‘volatile’
deb http://mirrors.kernel.org/debian/ wheezy-updates main
deb-src http://mirrors.kernel.org/debian/ wheezy-updates main
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Update the package list:

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apt-get update
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Update the minimal base system:

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apt-get upgrade
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Upgrade the rest of the system:

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apt-get dist-upgrade
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Reboot the system:

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reboot
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Once the server comes back to life verify you are now running Debian Wheezy:

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cat /etc/issue
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Sample Output:

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Debian GNU/Linux 7 n l
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TROUBLESHOOTING

DOVECONF: FATAL: ERROR IN CONFIGURATION FILE /ETC/DOVECOT/DOVECOT.CONF

Written by Matt Cooper
Hi, I'm Matt Cooper. I started this blog to pretty much act as a brain dump area for things I learn from day to day. You can contact me at: matt@matthewc424.sg-host.com.