RStudio Connect Email Issue

I am working on setting up the email feature for RStudio Connect but things don't seem to be working correctly for scheduling reports.

We are using sendmail from the server and using the admin tab for settings, I receive the test email "This is a test of RStudio Connect's email sending configuration.".

However, when I go to schedule an rmarkdown report, I am not getting the email after the report runs (the box to send email after update is checked). I've also tried the "Email Report" button in the header to email the report to me and I get the following: "This system has not been configured to send email. Please contact your RStudio Connect administrator."

How can the test email work but the report email not?

Much appreciated any insights you can give!