FTP Voyager SMTP Problems

Hi

I have set up the SMTP for the scheduler to use the smtp details for Office 365 which uses port 587. When the event attempts to run, I get an error saying

Unable to send message to xxxxxxxxxxx Unable to connect to SMTP server on port 25

1) Why is this failing?

2) Why is it saying it is using port 25 when I have told it to use port 587?

Thanks