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I hope to find the time to eventually adapt postfixadmin's debianization to the SuSE build services (where official rpms seem to be created), but first I chose the approach that's easy and well-known to me:
After creating my own postfixadmin github fork (and extending .gitignore a bit) I created a branch pba2deb.clazzes.org where I adapted debian/* for straight-forward PBA-based deployment to Clazzes.org's debian repository deb.clazzes.org.
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