Does postal still use outdated rails?
That's the biggest issue I have with this project as a exposed web service and mail server is for me high risk especially with outdated software.
https://github.com/postalserver/postal/blob/8ef89606bc34146f...
https://rubyonrails.org/maintenance
Not great, but better than 6.x.
I don't know rails well, but that sounds like 7.1 (that is unsupported) and not 7.2?
Rails minor versions are a bit odd imnho - but you're right 7.1 isn't under support anymore.