Nice! I updated my instance already. Thank you to all contributors! 🥳

There could be any number of reasons. For one, you can avoid power-tripping mods that ban people they disagree with just because they can. Even though they chose the same name, different communities might have different purposes or rules. Just find the ones you like and subscribe without worrying too much. Everything is federated so it doesn’t matter.

I agree with @terribleplan@lemmy.nrd.li that the inclusion of a postfix SMTP container and using that in the example configs is probably doing more harm than good.

You shouldn’t need the Postfix container at all unless you want to manually set that up and know what you’re doing. You configure your SMTP settings in the config.hjson file as outlined in the example defaults.hjson file. I’m using a third-party SMTP provider to avoid any deliverability issues with sending emails directly from my server’s IP address. Just ensure you configured your DNS correctly (DKIM, etc.), punch in the info, and it should work.