title: Postfix install fails. MySQL conflict
body: <p>I'm using CentOS 6, and trying to create a virtual mirror on a new server of an old one (which someone else setup).  As much as possible, I want keep everything with the same version, but I've started from scratch and am documenting everything.  By default, yum would install MySQL 5.1.73.  I downloaded MySQL community v5.1.69 and installed it manually.  This required installing a "shared compatibility" package of MySQL v5.1.69 first, and removing mysql-libs.x86_64.  With that in place, I successfully mirrored MySQL.</p>
  
  <p>Now, I'm trying to install Postfix.  Yum wants to pull version 2.6.6-6.  This fails because it requires a dependency that it attempts to install as well: mysql-libs.x86_64 v.5.1.73-5.  It splits out a pile of errors messages which are all similar to this:</p>
  
  <pre><code>Transaction Check Error:
    file /usr/share/mysql/charsets/Index.xml from install of mysql-libs-5.1.73-5.el6_6.x86_64 conflicts with file from package MySQL-server-community-5.1.69-1.rhel5.x86_64
  </code></pre>
  
  <p>My old server is using postfix v2.6.6-2, which is apparently compatible with MySQL v5.1.69.  I found the rpm for that version of postfix.  It doesn't install, because it requires mysql-libs.  I can't install mysql-libs v.5.1.69, because it conflicts with the MySQL community edition (also 5.1.69) that I installed.  I tried to install the MySQL 5.1.73 "shared compatibility" package, but that conflicts with MySQL community too.</p>
  
  <p>I'm going in circles.  Is the only way to break this chain to uninstall MySQL community? Must I just use the v5.1.73 default, and the Postfix 2.6.6-6?  I don't expect any real problems, but I'm going to end up with slightly different versions of MySQL and Postfix then I am trying hard to mirror.</p>