Hi,
I haven't seen such a thorough project description in quite some time :-)
The tasks are clear and I feel confident that this can be done in under a week.
What makes me qualified for this project:
- Red Hat Certified Systems Administrator. I'm more of an Ubuntu/Debian guy, though;
- lots of experience with Postfix and email sending;
- actually ran a streaming platform for a few years. It was Icecast on Ubuntu 9.10 (yes, that long ago), the "input" being an FM radio station so quite different than your setup;
- I can understand and debug PHP code and make minor edits if necessary.
I can write the scripts you described in Bash. If at all possible, I'd recommend going with Python for the scripts since it's easier to write secure and bug-free code in an actual programming language than in a scripting language. There is no sane way to unit-test shell scripts.
Let's have a chat if you're interested.
Regards,
Sergiu