brief background

New @xtra email address

tried setting up outlook 2016 on 2 different computer, when outlook does it's test account setting the following error comes back, Send test e-mail message: Your outgoing (SMTP) e-mail server has reported an internal error. If you continue to receive this message, contact your server administrator or Internet service provider (ISP). The server responded: 554 5.7.1 Message rejected due to possible spam conten

email works fine on thunderbird, same computer, but need functionality of the calendar from outlook

email settings work fine on android standard email app

settings as follows

email address xxxx.xxx@xtra.co.nz

pop3.xtra.co.nz

send.xtra.co.nz

username xxxx.xxx

password xxxxxxxxx

ticked "my outgoing server (SMTP) requires authenication"

and use same settings as my incomming mail server

Incomming pop3 port 995, SSL ticked

Outgoing SMTP 465

SSL selected

So where have I gone wrong.......just spent 1 hour with xtra support for them to tell me to ring microsoft....