I used to use
openssl_verify_mode => 'none'
for my SMTP config in discourse. Now, with the settings being passed through from that of GlobalSetting, I am reluctant to make changes in favour of this centralised (or not ) configuration file.
It would be cool if discourse added a few more (or possibly all) settings for any module that uses GlobalSetting, which doesn’t necessarily need documented in the default discourse.conf.