slimx
Same, it works. Phpmail is indeed disabled, because anything would be stopped by rspamd or mailbaby anyways.
If anyone wants their Wordpress to be able to send emails, they need the SMTP Mailer plugin, and if required generate an email address in Enhance.
It's not perfect, but nothing related to email is anymore, so just have a simple guide available for customers and having the email/DNS part set up properly, there's no headaches and no delivery issues.