Unraid Support Thread for Stalwart

I recently posted to the official Unraid forums about my Stalwart implementation instructions.

So far there has been one poster who's tailored their implementation but was able to get some useful knowledge out of my work. Thankfully I've saved them "hours of head-scratching". 😀

I'll check with them to see if they've run into any issues which could use clarification or help me update the instructions.