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I need to reconfigure my debian or ubuntu postfix package.

How can I do this?

NOTE: I am answering my own question

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There is a button when posting asking a question that allows you immediately write an answer, you can just use that one instead of putting up a note :) – Lucas Kauffman Jul 28 '12 at 14:08
That's what I did; however, some people aren't familiar with the policy and get a little cranky about answering your own question so quickly. A note can't hurt – Mike Pennington Jul 28 '12 at 14:10
up vote 2 down vote accepted

Use dpkg-reconfigure as root:

dpkg-reconfigure postfix

Or for a general solution:

dpkg-reconfigure <debian_package_name>
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