Outbound email rejected by SMTP proxy because from email does not match mine

I think there's a way to do this but I didn't want to hack at it so I'll ask.

My executive reports are sent outbound by SMTP proxy.
My mail provider is rejecting them becuase the from address in these emails does not match the authenticated account email.

My question is this: How do I change the from email in the outbound emails coming from the UTM itself?


From the SMTP Logs:

2024:02:11-11:00:08 wahine exim-out[8106]: 2024-02-11 11:00:08 1rZF36-0001yb-1q ** do-not-reply@fw-notify.net P=<> R=smarthost_route T=smarthost_smtp H=smtp.protonmail.ch [176.119.200.135]:587 X=TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256 CV=no: SMTP error from remote mail server after end of data: 550 5.7.1 Submission not allowed for messages in which header from does not match MAIL FROM
2024:02:11-11:00:08 wahine exim-out[8106]: 2024-02-11 11:00:08 1rZF36-0001yb-1q do-not-reply@fw-notify.net: error ignored
2024:02:11-11:00:08 wahine exim-out[8106]: 2024-02-11 11:00:08 1rZF36-0001yb-1q Completed

Thanks!
Doug