As you can see, emails are configured to go out using the SMTP MTA. Despite this, emails are attempted via PHP's mail function, which fails. Is it possible that emails for some events have a setting that is overriding the default?
jbondhus1 It seems when an issue reaches your SMTP, it will fall back to the default PHP mail function
ramrajone Do you have a source for that? Is that the documented behavior?
jbondhus1 nothing official, but I have seen in our setup, once in a while connection to office365 issue and I see the same errors you see. Here is one that happen today, you normally see SMTP errors too
Yes. If SMTP fails, it tries to fall back to PHPMail.
