Switchvox Cloud - What are SMTP settings supposed to be for DCS?

These are the SMTP settings that need to be set for voicemail notifications to work.
In some scenarios, such as a premise based Switchvox backup being restored to a cloud PBX, these settings need to be set:

1. Go to Tools > SMTP

2. Email "From" Address: voicemail@<url of cloud> (for example, voicemail@mypbx.digiumcloud.net)

3. Outbound SMTP Server: leave blank

4. Outbound SMTP Username: leave blank

5. Outbound SMTP Password: leave blank

6. Outbound SMTP Port 25

7. Connection Encryption: STARTTLS