ActionMailer doesn’t support XOAUTH2, which Microsoft requires.
The only thing I can think of would be running an internal SMTP server and forwarding those emails to O365 for final delivery.
Edit: I misread the section about SMTP AUTH
ActionMailer doesn’t support XOAUTH2, which Microsoft requires.
The only thing I can think of would be running an internal SMTP server and forwarding those emails to O365 for final delivery.
Edit: I misread the section about SMTP AUTH