With the release of Ion, we have also changed how the Ion system handles sending Email.
Emails are now sent on a per location basis. This means that each location has the ability to send out the emails.
If a user is added to Location Europe, then it will use the server you designated for that location to send email.
If you used the previous versions before Ion, and did not have the Reseller Billing Service installed at the location, you will need to manually enter the data. If you did have this service, it will auto pull the email settings from that service for each location.
Please go to the Hosting Admin, and then Click Services and Locations. At the top you will see a new button, Hoster Email Management.
You will need to set this for EACH location that you have installed in your system.