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Email is properly configured and working via "Settings-Administration-General E-Mail Configuration"
With a group setup under Lists with valid email addresses for each member, the email appears to send, (Although there is an odd "Form error-you must enter a body for your email". Adjusting text qualities clears that) however emails are not received. Nothing evident in logs I've looked at.
It is a production system. I'll perform the upgrade. I was holding off until it was necessary, and this would be a great upgrade if it fixes the Lists email issue. I'll let you know how it works out.